/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:37:32,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:37:32,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:37:32,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:37:32,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:37:32,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:37:32,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:37:32,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:37:32,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:37:32,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:37:32,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:37:32,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:37:32,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:37:32,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:37:32,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:37:32,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:37:32,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:37:32,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:37:32,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:37:32,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:37:32,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:37:32,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:37:32,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:37:32,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:37:32,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:37:32,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:37:32,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:37:32,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:37:32,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:37:32,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:37:32,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:37:32,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:37:32,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:37:32,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:37:32,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:37:32,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:37:32,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:37:32,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:37:32,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:37:32,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:37:32,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:37:32,618 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 [2020-10-28 09:37:32,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:37:32,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:37:32,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:37:32,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:37:32,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:37:32,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:37:32,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:37:32,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:37:32,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:37:32,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:37:32,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:37:32,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:37:32,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:37:32,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:37:32,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:37:32,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:37:32,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:37:32,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:37:32,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:37:32,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:37:32,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:37:32,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:37:32,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:37:32,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:37:32,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:37:32,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:37:32,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:37:32,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:37:32,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:37:32,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:37:33,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:37:33,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:37:33,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:37:33,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:37:33,163 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:37:33,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2020-10-28 09:37:33,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/820588ccb/d55f4fadf2104c37978de71f33870e40/FLAG64f117eaf [2020-10-28 09:37:34,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:37:34,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2020-10-28 09:37:34,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/820588ccb/d55f4fadf2104c37978de71f33870e40/FLAG64f117eaf [2020-10-28 09:37:34,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/820588ccb/d55f4fadf2104c37978de71f33870e40 [2020-10-28 09:37:34,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:37:34,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:37:34,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:34,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:37:34,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:37:34,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360b8247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34, skipping insertion in model container [2020-10-28 09:37:34,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:37:34,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:37:34,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:34,674 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:37:34,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:34,739 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:37:34,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34 WrapperNode [2020-10-28 09:37:34,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:34,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:37:34,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:37:34,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:37:34,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (1/1) ... [2020-10-28 09:37:34,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:37:34,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:37:34,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:37:34,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:37:34,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (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 [2020-10-28 09:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:37:34,891 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-28 09:37:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-28 09:37:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-28 09:37:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:37:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:37:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:37:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-28 09:37:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:37:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:37:35,704 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:37:35,704 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:37:35,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:35 BoogieIcfgContainer [2020-10-28 09:37:35,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:37:35,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:37:35,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:37:35,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:37:35,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:34" (1/3) ... [2020-10-28 09:37:35,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24622bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:35, skipping insertion in model container [2020-10-28 09:37:35,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:34" (2/3) ... [2020-10-28 09:37:35,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24622bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:35, skipping insertion in model container [2020-10-28 09:37:35,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:35" (3/3) ... [2020-10-28 09:37:35,721 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2020-10-28 09:37:35,736 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:37:35,743 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:37:35,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:37:35,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:37:35,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:37:35,810 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:37:35,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:37:35,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:37:35,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:37:35,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:37:35,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:37:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-28 09:37:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 09:37:35,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:35,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:35,856 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:35,866 INFO L82 PathProgramCache]: Analyzing trace with hash 474751405, now seen corresponding path program 1 times [2020-10-28 09:37:35,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386425703] [2020-10-28 09:37:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 09:37:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:37:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:37:41,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:37:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:37:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:37:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:41,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:41,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:41,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 09:37:41,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:41,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:37:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:37:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:41,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:37:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:37:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:37:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:37:41,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:41,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:37:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:37:41,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386425703] [2020-10-28 09:37:41,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:41,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:37:41,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393992114] [2020-10-28 09:37:41,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:37:41,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:41,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:37:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:37:41,418 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 5 states. [2020-10-28 09:37:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:41,963 INFO L93 Difference]: Finished difference Result 142 states and 220 transitions. [2020-10-28 09:37:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:37:41,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-28 09:37:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:41,977 INFO L225 Difference]: With dead ends: 142 [2020-10-28 09:37:41,977 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 09:37:41,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:37:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 09:37:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-10-28 09:37:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 09:37:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2020-10-28 09:37:42,040 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 50 [2020-10-28 09:37:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:42,041 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2020-10-28 09:37:42,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:37:42,041 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2020-10-28 09:37:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:37:42,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:42,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:42,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:37:42,046 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:42,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:42,047 INFO L82 PathProgramCache]: Analyzing trace with hash 657646926, now seen corresponding path program 1 times [2020-10-28 09:37:42,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:42,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520111681] [2020-10-28 09:37:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:37:47,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:37:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:47,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:37:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:47,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:47,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:47,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 09:37:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:37:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:37:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:37:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:37:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:37:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:47,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:37:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:37:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:37:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:47,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:37:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 09:37:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:37:47,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:47,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:37:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:37:47,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520111681] [2020-10-28 09:37:47,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:47,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:37:47,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258307692] [2020-10-28 09:37:47,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:37:47,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:37:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:37:47,254 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 5 states. [2020-10-28 09:37:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:47,610 INFO L93 Difference]: Finished difference Result 129 states and 176 transitions. [2020-10-28 09:37:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:37:47,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-28 09:37:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:47,613 INFO L225 Difference]: With dead ends: 129 [2020-10-28 09:37:47,613 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 09:37:47,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:37:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 09:37:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-28 09:37:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 09:37:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2020-10-28 09:37:47,633 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 53 [2020-10-28 09:37:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:47,633 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2020-10-28 09:37:47,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:37:47,633 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2020-10-28 09:37:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 09:37:47,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:47,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:47,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:37:47,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:47,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1546782415, now seen corresponding path program 1 times [2020-10-28 09:37:47,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:47,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171275340] [2020-10-28 09:37:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 09:37:52,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:37:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:37:52,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 09:37:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:37:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:52,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:37:52,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 09:37:52,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:37:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:52,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:52,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:37:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:37:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:52,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 09:37:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:37:52,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:52,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 09:37:52,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171275340] [2020-10-28 09:37:52,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:52,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:37:52,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636965223] [2020-10-28 09:37:52,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:37:52,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:52,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:37:52,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:37:52,801 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand 4 states. [2020-10-28 09:37:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:53,154 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-10-28 09:37:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:37:53,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 09:37:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:53,157 INFO L225 Difference]: With dead ends: 85 [2020-10-28 09:37:53,158 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 09:37:53,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:37:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 09:37:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-28 09:37:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 09:37:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2020-10-28 09:37:53,191 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 55 [2020-10-28 09:37:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:53,191 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2020-10-28 09:37:53,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:37:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2020-10-28 09:37:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 09:37:53,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:53,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:53,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:37:53,197 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1608484203, now seen corresponding path program 1 times [2020-10-28 09:37:53,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:53,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45603700] [2020-10-28 09:37:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 09:37:58,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:37:58,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:37:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:37:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:37:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:37:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:37:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:58,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:37:58,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:58,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:37:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:58,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:37:58,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:37:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:58,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:37:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:58,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 09:37:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:58,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:58,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:37:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 09:37:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:37:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 09:37:58,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45603700] [2020-10-28 09:37:58,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:58,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:37:58,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477606676] [2020-10-28 09:37:58,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:37:58,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:58,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:37:58,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:37:58,486 INFO L87 Difference]: Start difference. First operand 75 states and 100 transitions. Second operand 7 states. [2020-10-28 09:38:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:03,031 INFO L93 Difference]: Finished difference Result 103 states and 140 transitions. [2020-10-28 09:38:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:38:03,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-28 09:38:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:03,034 INFO L225 Difference]: With dead ends: 103 [2020-10-28 09:38:03,034 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 09:38:03,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:38:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 09:38:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2020-10-28 09:38:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 09:38:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2020-10-28 09:38:03,054 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 57 [2020-10-28 09:38:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:03,054 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2020-10-28 09:38:03,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:38:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2020-10-28 09:38:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 09:38:03,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:03,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:03,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:38:03,059 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2039216441, now seen corresponding path program 1 times [2020-10-28 09:38:03,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:03,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331023602] [2020-10-28 09:38:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:38:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:38:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2676 [2020-10-28 09:38:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:38:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:05,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:05,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:38:05,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:38:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:38:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:05,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:38:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:05,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 09:38:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:05,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:05,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331023602] [2020-10-28 09:38:05,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:05,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:38:05,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383843824] [2020-10-28 09:38:05,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:38:05,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:05,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:38:05,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:38:05,914 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand 6 states. [2020-10-28 09:38:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:06,618 INFO L93 Difference]: Finished difference Result 193 states and 277 transitions. [2020-10-28 09:38:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:38:06,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-28 09:38:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:06,621 INFO L225 Difference]: With dead ends: 193 [2020-10-28 09:38:06,621 INFO L226 Difference]: Without dead ends: 117 [2020-10-28 09:38:06,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:38:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-28 09:38:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2020-10-28 09:38:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 09:38:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 129 transitions. [2020-10-28 09:38:06,645 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 129 transitions. Word has length 59 [2020-10-28 09:38:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:06,646 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 129 transitions. [2020-10-28 09:38:06,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:38:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 129 transitions. [2020-10-28 09:38:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 09:38:06,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:06,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:06,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:38:06,649 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:06,650 INFO L82 PathProgramCache]: Analyzing trace with hash -734287593, now seen corresponding path program 1 times [2020-10-28 09:38:06,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:06,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943253162] [2020-10-28 09:38:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 09:38:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:38:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:11,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:11,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:38:11,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:11,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:11,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:11,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 09:38:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 09:38:11,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:38:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 09:38:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 09:38:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:11,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:38:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:11,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:38:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:11,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:38:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:11,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943253162] [2020-10-28 09:38:11,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:11,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:38:11,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563382070] [2020-10-28 09:38:11,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:38:11,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:38:11,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:38:11,865 INFO L87 Difference]: Start difference. First operand 93 states and 129 transitions. Second operand 6 states. [2020-10-28 09:38:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:12,320 INFO L93 Difference]: Finished difference Result 180 states and 254 transitions. [2020-10-28 09:38:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:38:12,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-28 09:38:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:12,323 INFO L225 Difference]: With dead ends: 180 [2020-10-28 09:38:12,323 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 09:38:12,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:38:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 09:38:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2020-10-28 09:38:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 09:38:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 134 transitions. [2020-10-28 09:38:12,363 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 134 transitions. Word has length 60 [2020-10-28 09:38:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:12,363 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 134 transitions. [2020-10-28 09:38:12,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:38:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 134 transitions. [2020-10-28 09:38:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 09:38:12,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:12,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:12,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:38:12,366 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:12,369 INFO L82 PathProgramCache]: Analyzing trace with hash 272798168, now seen corresponding path program 1 times [2020-10-28 09:38:12,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:12,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249636541] [2020-10-28 09:38:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 09:38:16,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:38:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3806 [2020-10-28 09:38:16,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:38:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:38:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:16,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:16,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:16,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 09:38:16,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:16,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 09:38:16,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:38:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:38:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 09:38:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:16,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:16,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:16,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:38:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:16,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:38:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:16,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:16,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:16,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:16,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249636541] [2020-10-28 09:38:16,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:16,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:38:16,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87086803] [2020-10-28 09:38:16,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:38:16,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:16,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:38:16,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:38:16,400 INFO L87 Difference]: Start difference. First operand 97 states and 134 transitions. Second operand 7 states. [2020-10-28 09:38:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:17,289 INFO L93 Difference]: Finished difference Result 206 states and 293 transitions. [2020-10-28 09:38:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:38:17,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 09:38:17,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:17,295 INFO L225 Difference]: With dead ends: 206 [2020-10-28 09:38:17,295 INFO L226 Difference]: Without dead ends: 127 [2020-10-28 09:38:17,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:38:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-28 09:38:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 99. [2020-10-28 09:38:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 09:38:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2020-10-28 09:38:17,338 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 62 [2020-10-28 09:38:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:17,338 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2020-10-28 09:38:17,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:38:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2020-10-28 09:38:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:38:17,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:17,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:17,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:38:17,341 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:17,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:17,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2076278746, now seen corresponding path program 2 times [2020-10-28 09:38:17,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:17,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198824367] [2020-10-28 09:38:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 09:38:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:38:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:38:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 09:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:38:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:22,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:38:22,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:38:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:22,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 09:38:22,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:38:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 09:38:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:38:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:38:22,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:38:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:22,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:38:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:38:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:22,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:38:22,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:38:22,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 09:38:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:22,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 09:38:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:38:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:38:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:22,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198824367] [2020-10-28 09:38:22,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:22,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:38:22,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860104364] [2020-10-28 09:38:22,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:38:22,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:38:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:38:22,778 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand 12 states. [2020-10-28 09:38:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:24,051 INFO L93 Difference]: Finished difference Result 209 states and 299 transitions. [2020-10-28 09:38:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:38:24,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-28 09:38:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:24,054 INFO L225 Difference]: With dead ends: 209 [2020-10-28 09:38:24,054 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 09:38:24,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:38:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 09:38:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2020-10-28 09:38:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:38:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 142 transitions. [2020-10-28 09:38:24,103 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 142 transitions. Word has length 63 [2020-10-28 09:38:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:24,104 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 142 transitions. [2020-10-28 09:38:24,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:38:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 142 transitions. [2020-10-28 09:38:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 09:38:24,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:24,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:24,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:38:24,106 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash -890511065, now seen corresponding path program 2 times [2020-10-28 09:38:24,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:24,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20331731] [2020-10-28 09:38:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 09:38:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:38:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3492 [2020-10-28 09:38:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:38:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:27,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:27,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 09:38:27,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 09:38:27,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:38:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:38:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:38:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:27,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:27,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:38:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 09:38:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:27,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:38:27,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:27,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:27,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20331731] [2020-10-28 09:38:27,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:27,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:38:27,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726452408] [2020-10-28 09:38:27,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:38:27,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:27,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:38:27,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:38:27,856 INFO L87 Difference]: Start difference. First operand 103 states and 142 transitions. Second operand 8 states. [2020-10-28 09:38:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:28,608 INFO L93 Difference]: Finished difference Result 202 states and 289 transitions. [2020-10-28 09:38:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:38:28,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-28 09:38:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:28,611 INFO L225 Difference]: With dead ends: 202 [2020-10-28 09:38:28,611 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 09:38:28,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:38:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 09:38:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2020-10-28 09:38:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-28 09:38:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2020-10-28 09:38:28,635 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 65 [2020-10-28 09:38:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:28,636 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2020-10-28 09:38:28,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:38:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2020-10-28 09:38:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 09:38:28,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:28,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:28,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:38:28,640 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash 515840695, now seen corresponding path program 3 times [2020-10-28 09:38:28,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:28,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316228953] [2020-10-28 09:38:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:28,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:33,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 09:38:33,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:38:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:38:33,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:33,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:38:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 09:38:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:38:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:33,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:33,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:33,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:33,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 09:38:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:38:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 09:38:33,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:33,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:38:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:38:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:38:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:33,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:33,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:33,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:38:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 09:38:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:33,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:33,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:33,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:33,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:33,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:38:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:38:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:34,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:34,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:34,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:38:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:34,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316228953] [2020-10-28 09:38:34,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:34,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:38:34,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30815994] [2020-10-28 09:38:34,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:38:34,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:38:34,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:38:34,067 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand 13 states. [2020-10-28 09:38:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:35,793 INFO L93 Difference]: Finished difference Result 238 states and 339 transitions. [2020-10-28 09:38:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:38:35,794 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-28 09:38:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:35,796 INFO L225 Difference]: With dead ends: 238 [2020-10-28 09:38:35,796 INFO L226 Difference]: Without dead ends: 156 [2020-10-28 09:38:35,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:38:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-28 09:38:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 109. [2020-10-28 09:38:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 09:38:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2020-10-28 09:38:35,820 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 66 [2020-10-28 09:38:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:35,820 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2020-10-28 09:38:35,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:38:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2020-10-28 09:38:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 09:38:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:35,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:35,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:38:35,822 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash -944759944, now seen corresponding path program 3 times [2020-10-28 09:38:35,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:35,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283090645] [2020-10-28 09:38:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3260 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:38:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:39,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:39,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:39,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:38:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:38:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:39,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:39,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:38:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:39,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:39,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:39,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:38:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:39,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283090645] [2020-10-28 09:38:39,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:39,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:38:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429378892] [2020-10-28 09:38:39,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:38:39,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:38:39,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:38:39,332 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand 9 states. [2020-10-28 09:38:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:40,730 INFO L93 Difference]: Finished difference Result 233 states and 333 transitions. [2020-10-28 09:38:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:38:40,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-28 09:38:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:40,732 INFO L225 Difference]: With dead ends: 233 [2020-10-28 09:38:40,732 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 09:38:40,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:38:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 09:38:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 111. [2020-10-28 09:38:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 09:38:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2020-10-28 09:38:40,755 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 68 [2020-10-28 09:38:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:40,755 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2020-10-28 09:38:40,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:38:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2020-10-28 09:38:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 09:38:40,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:40,757 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:40,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:38:40,757 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1165874554, now seen corresponding path program 4 times [2020-10-28 09:38:40,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:40,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991001876] [2020-10-28 09:38:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:45,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:45,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 09:38:45,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:38:45,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:38:45,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:45,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:38:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:38:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:38:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:45,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:45,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:45,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:45,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:45,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:45,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:45,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:45,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:45,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:45,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:46,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:46,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:38:46,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:38:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 09:38:46,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:46,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:38:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:38:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:38:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:38:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:38:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:38:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:46,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:46,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:46,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:46,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:46,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:38:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:38:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:46,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:46,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:46,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 09:38:46,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:46,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:38:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:38:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-28 09:38:46,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991001876] [2020-10-28 09:38:46,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:46,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:38:46,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368894597] [2020-10-28 09:38:46,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:38:46,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:46,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:38:46,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:38:46,248 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand 10 states. [2020-10-28 09:38:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:47,498 INFO L93 Difference]: Finished difference Result 181 states and 261 transitions. [2020-10-28 09:38:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:38:47,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-28 09:38:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:47,502 INFO L225 Difference]: With dead ends: 181 [2020-10-28 09:38:47,502 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 09:38:47,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:38:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 09:38:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 131. [2020-10-28 09:38:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 09:38:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 194 transitions. [2020-10-28 09:38:47,524 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 194 transitions. Word has length 69 [2020-10-28 09:38:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:47,524 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 194 transitions. [2020-10-28 09:38:47,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:38:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 194 transitions. [2020-10-28 09:38:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 09:38:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:47,526 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:38:47,526 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:47,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1866939132, now seen corresponding path program 1 times [2020-10-28 09:38:47,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:47,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932725271] [2020-10-28 09:38:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 09:38:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:38:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:38:52,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:38:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 09:38:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:38:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:52,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:52,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:52,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:52,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:52,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:52,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:38:52,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:38:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 09:38:52,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:38:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:52,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:38:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:52,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:38:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:52,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:52,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:52,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:38:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 09:38:52,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932725271] [2020-10-28 09:38:52,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:38:52,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:38:52,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564894444] [2020-10-28 09:38:52,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:38:52,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:38:52,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:38:52,698 INFO L87 Difference]: Start difference. First operand 131 states and 194 transitions. Second operand 5 states. [2020-10-28 09:38:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:53,198 INFO L93 Difference]: Finished difference Result 145 states and 209 transitions. [2020-10-28 09:38:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:38:53,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-28 09:38:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:53,203 INFO L225 Difference]: With dead ends: 145 [2020-10-28 09:38:53,204 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 09:38:53,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:38:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 09:38:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-28 09:38:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 09:38:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 184 transitions. [2020-10-28 09:38:53,236 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 184 transitions. Word has length 69 [2020-10-28 09:38:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:53,236 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 184 transitions. [2020-10-28 09:38:53,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:38:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 184 transitions. [2020-10-28 09:38:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 09:38:53,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:53,238 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:53,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:38:53,238 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:53,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1134948036, now seen corresponding path program 1 times [2020-10-28 09:38:53,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:53,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980239689] [2020-10-28 09:38:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:53,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 09:38:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:38:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:53,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:53,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:53,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:53,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:53,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:53,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:53,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:38:53,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 09:38:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:53,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:38:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:38:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:54,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:38:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:54,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:54,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:38:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:54,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:54,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:54,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:54,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:38:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:54,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:54,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:54,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:54,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:54,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:54,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980239689] [2020-10-28 09:38:54,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:54,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:38:54,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516465754] [2020-10-28 09:38:54,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:38:54,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:54,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:38:54,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:38:54,086 INFO L87 Difference]: Start difference. First operand 125 states and 184 transitions. Second operand 9 states. [2020-10-28 09:38:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:55,106 INFO L93 Difference]: Finished difference Result 256 states and 409 transitions. [2020-10-28 09:38:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:38:55,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-28 09:38:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:55,109 INFO L225 Difference]: With dead ends: 256 [2020-10-28 09:38:55,109 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 09:38:55,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:38:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 09:38:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-10-28 09:38:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 09:38:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2020-10-28 09:38:55,137 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 69 [2020-10-28 09:38:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:55,138 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2020-10-28 09:38:55,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:38:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2020-10-28 09:38:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 09:38:55,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:55,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:55,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:38:55,141 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2129556359, now seen corresponding path program 4 times [2020-10-28 09:38:55,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:55,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912860955] [2020-10-28 09:38:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 09:38:59,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4030 [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:38:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:59,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:38:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:59,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:38:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 09:38:59,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 09:38:59,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:38:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:38:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:38:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 09:38:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:38:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:38:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 09:38:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:59,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:59,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:38:59,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:59,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:38:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:38:59,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912860955] [2020-10-28 09:38:59,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:59,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:38:59,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420512544] [2020-10-28 09:38:59,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:38:59,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:59,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:38:59,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:38:59,469 INFO L87 Difference]: Start difference. First operand 129 states and 189 transitions. Second operand 10 states. [2020-10-28 09:39:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:01,129 INFO L93 Difference]: Finished difference Result 273 states and 436 transitions. [2020-10-28 09:39:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:39:01,130 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-28 09:39:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:01,135 INFO L225 Difference]: With dead ends: 273 [2020-10-28 09:39:01,135 INFO L226 Difference]: Without dead ends: 171 [2020-10-28 09:39:01,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:39:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-28 09:39:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 131. [2020-10-28 09:39:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 09:39:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 192 transitions. [2020-10-28 09:39:01,178 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 192 transitions. Word has length 71 [2020-10-28 09:39:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:01,180 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 192 transitions. [2020-10-28 09:39:01,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:39:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 192 transitions. [2020-10-28 09:39:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 09:39:01,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:01,182 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:01,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:39:01,183 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:01,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1949472917, now seen corresponding path program 2 times [2020-10-28 09:39:01,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:01,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209209092] [2020-10-28 09:39:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:01,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 09:39:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:39:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-28 09:39:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:01,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:39:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:39:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:01,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:01,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:01,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:01,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:39:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:02,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:39:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 09:39:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:39:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:02,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209209092] [2020-10-28 09:39:02,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:02,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:39:02,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069433987] [2020-10-28 09:39:02,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:39:02,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:39:02,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:39:02,154 INFO L87 Difference]: Start difference. First operand 131 states and 192 transitions. Second operand 10 states. [2020-10-28 09:39:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:03,226 INFO L93 Difference]: Finished difference Result 269 states and 431 transitions. [2020-10-28 09:39:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:39:03,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-28 09:39:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:03,235 INFO L225 Difference]: With dead ends: 269 [2020-10-28 09:39:03,235 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 09:39:03,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=184, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:39:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 09:39:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 135. [2020-10-28 09:39:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:39:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2020-10-28 09:39:03,264 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 72 [2020-10-28 09:39:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:03,265 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2020-10-28 09:39:03,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:39:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2020-10-28 09:39:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 09:39:03,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:03,269 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:03,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:39:03,269 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1091048168, now seen corresponding path program 5 times [2020-10-28 09:39:03,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:03,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62708033] [2020-10-28 09:39:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:39:08,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:39:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:39:08,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:39:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 09:39:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:39:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:08,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:08,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:08,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:39:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:39:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:39:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:39:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:39:08,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:08,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:39:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:39:08,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62708033] [2020-10-28 09:39:08,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:39:08,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 09:39:08,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398415681] [2020-10-28 09:39:08,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:39:08,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:08,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:39:08,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:39:08,492 INFO L87 Difference]: Start difference. First operand 135 states and 197 transitions. Second operand 9 states. [2020-10-28 09:39:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:09,499 INFO L93 Difference]: Finished difference Result 190 states and 269 transitions. [2020-10-28 09:39:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:39:09,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-28 09:39:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:09,502 INFO L225 Difference]: With dead ends: 190 [2020-10-28 09:39:09,502 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 09:39:09,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:39:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 09:39:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-10-28 09:39:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:39:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2020-10-28 09:39:09,541 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 74 [2020-10-28 09:39:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:09,541 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2020-10-28 09:39:09,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:39:09,543 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2020-10-28 09:39:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 09:39:09,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:09,547 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:09,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:39:09,548 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:09,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:09,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1209774422, now seen corresponding path program 1 times [2020-10-28 09:39:09,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:09,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053510100] [2020-10-28 09:39:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:39:10,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:39:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-28 09:39:10,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:39:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 09:39:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:39:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:10,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:39:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:39:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:39:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 09:39:10,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053510100] [2020-10-28 09:39:10,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:39:10,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 09:39:10,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025803143] [2020-10-28 09:39:10,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:39:10,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:10,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:39:10,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:39:10,347 INFO L87 Difference]: Start difference. First operand 135 states and 197 transitions. Second operand 7 states. [2020-10-28 09:39:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:11,057 INFO L93 Difference]: Finished difference Result 142 states and 203 transitions. [2020-10-28 09:39:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:39:11,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 09:39:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:11,059 INFO L225 Difference]: With dead ends: 142 [2020-10-28 09:39:11,060 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 09:39:11,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:39:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 09:39:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-28 09:39:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:39:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 196 transitions. [2020-10-28 09:39:11,084 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 196 transitions. Word has length 74 [2020-10-28 09:39:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:11,084 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 196 transitions. [2020-10-28 09:39:11,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:39:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 196 transitions. [2020-10-28 09:39:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 09:39:11,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:11,086 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:11,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:39:11,086 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:11,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:11,087 INFO L82 PathProgramCache]: Analyzing trace with hash -565232940, now seen corresponding path program 1 times [2020-10-28 09:39:11,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:11,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379502296] [2020-10-28 09:39:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:11,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:11,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:11,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 09:39:11,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:39:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:11,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:11,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:11,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:11,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:11,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:11,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:11,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:39:12,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:39:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 09:39:12,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:12,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:12,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:39:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:12,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:12,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:39:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:12,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:12,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:12,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:39:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:12,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:12,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:39:12,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:12,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:39:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:39:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 09:39:12,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379502296] [2020-10-28 09:39:12,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:39:12,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 09:39:12,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453267335] [2020-10-28 09:39:12,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:39:12,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:12,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:39:12,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:39:12,067 INFO L87 Difference]: Start difference. First operand 135 states and 196 transitions. Second operand 7 states. [2020-10-28 09:39:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:14,660 INFO L93 Difference]: Finished difference Result 159 states and 221 transitions. [2020-10-28 09:39:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:39:14,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 09:39:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:14,662 INFO L225 Difference]: With dead ends: 159 [2020-10-28 09:39:14,662 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 09:39:14,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:39:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 09:39:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2020-10-28 09:39:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-28 09:39:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2020-10-28 09:39:14,683 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 74 [2020-10-28 09:39:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:14,684 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2020-10-28 09:39:14,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:39:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2020-10-28 09:39:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 09:39:14,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:14,686 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:14,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:39:14,686 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1405674199, now seen corresponding path program 1 times [2020-10-28 09:39:14,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:14,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115641574] [2020-10-28 09:39:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:14,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:14,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 09:39:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 09:39:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:14,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:39:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:39:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:14,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:14,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:14,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:39:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 09:39:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:39:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:39:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:39:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:15,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:15,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:15,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:15,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 09:39:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:15,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:15,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:15,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:15,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:15,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:39:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:15,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:15,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:15,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:15,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:15,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:15,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:15,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115641574] [2020-10-28 09:39:15,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:15,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:39:15,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890714498] [2020-10-28 09:39:15,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:39:15,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:39:15,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:39:15,218 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand 11 states. [2020-10-28 09:39:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:17,088 INFO L93 Difference]: Finished difference Result 296 states and 419 transitions. [2020-10-28 09:39:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:39:17,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-28 09:39:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:17,092 INFO L225 Difference]: With dead ends: 296 [2020-10-28 09:39:17,092 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 09:39:17,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:39:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 09:39:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 142. [2020-10-28 09:39:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 09:39:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 191 transitions. [2020-10-28 09:39:17,116 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 191 transitions. Word has length 76 [2020-10-28 09:39:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:17,117 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 191 transitions. [2020-10-28 09:39:17,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:39:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 191 transitions. [2020-10-28 09:39:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:39:17,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:17,118 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:17,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:39:17,119 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:17,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1019937143, now seen corresponding path program 1 times [2020-10-28 09:39:17,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:17,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205077178] [2020-10-28 09:39:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:39:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:17,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 09:39:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 09:39:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:39:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:39:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:39:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:39:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:39:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:17,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205077178] [2020-10-28 09:39:17,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:17,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:39:17,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83463366] [2020-10-28 09:39:17,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:39:17,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:39:17,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:39:17,524 INFO L87 Difference]: Start difference. First operand 142 states and 191 transitions. Second operand 11 states. [2020-10-28 09:39:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:18,959 INFO L93 Difference]: Finished difference Result 298 states and 430 transitions. [2020-10-28 09:39:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:39:18,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-28 09:39:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:18,964 INFO L225 Difference]: With dead ends: 298 [2020-10-28 09:39:18,964 INFO L226 Difference]: Without dead ends: 188 [2020-10-28 09:39:18,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:39:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-28 09:39:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 146. [2020-10-28 09:39:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 09:39:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 196 transitions. [2020-10-28 09:39:18,989 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 196 transitions. Word has length 77 [2020-10-28 09:39:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:18,989 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 196 transitions. [2020-10-28 09:39:18,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:39:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 196 transitions. [2020-10-28 09:39:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 09:39:18,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:18,991 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:18,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:39:18,991 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:18,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2074080824, now seen corresponding path program 2 times [2020-10-28 09:39:18,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:18,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315559461] [2020-10-28 09:39:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:39:19,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:19,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:39:19,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 09:39:19,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:39:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:39:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 09:39:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:19,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:39:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:19,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:39:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:19,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315559461] [2020-10-28 09:39:19,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:19,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:39:19,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917813273] [2020-10-28 09:39:19,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:39:19,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:39:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:39:19,510 INFO L87 Difference]: Start difference. First operand 146 states and 196 transitions. Second operand 12 states. [2020-10-28 09:39:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:21,328 INFO L93 Difference]: Finished difference Result 284 states and 398 transitions. [2020-10-28 09:39:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:39:21,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-28 09:39:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:21,334 INFO L225 Difference]: With dead ends: 284 [2020-10-28 09:39:21,334 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 09:39:21,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:39:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 09:39:21,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2020-10-28 09:39:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 09:39:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2020-10-28 09:39:21,358 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 79 [2020-10-28 09:39:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:21,358 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2020-10-28 09:39:21,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:39:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2020-10-28 09:39:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 09:39:21,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:21,360 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:21,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:39:21,361 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1518160456, now seen corresponding path program 2 times [2020-10-28 09:39:21,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:21,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670029620] [2020-10-28 09:39:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 09:39:21,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 09:39:21,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:39:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:21,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:39:21,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:39:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:39:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:21,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:21,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:39:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:39:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:21,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:21,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:21,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:21,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:21,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:21,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670029620] [2020-10-28 09:39:21,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:21,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:39:21,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364537140] [2020-10-28 09:39:21,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:39:21,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:39:21,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:39:21,780 INFO L87 Difference]: Start difference. First operand 147 states and 198 transitions. Second operand 12 states. [2020-10-28 09:39:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:22,943 INFO L93 Difference]: Finished difference Result 309 states and 448 transitions. [2020-10-28 09:39:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:39:22,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-28 09:39:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:22,947 INFO L225 Difference]: With dead ends: 309 [2020-10-28 09:39:22,947 INFO L226 Difference]: Without dead ends: 196 [2020-10-28 09:39:22,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:39:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-28 09:39:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 152. [2020-10-28 09:39:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 09:39:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 205 transitions. [2020-10-28 09:39:22,976 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 205 transitions. Word has length 80 [2020-10-28 09:39:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:22,977 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 205 transitions. [2020-10-28 09:39:22,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:39:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 205 transitions. [2020-10-28 09:39:22,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:39:22,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:22,981 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:22,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:39:22,981 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:22,982 INFO L82 PathProgramCache]: Analyzing trace with hash -169652535, now seen corresponding path program 3 times [2020-10-28 09:39:22,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:22,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532889136] [2020-10-28 09:39:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:39:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 09:39:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:39:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:39:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:23,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:23,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:39:23,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:39:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:39:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 09:39:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:39:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:23,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:23,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:23,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:23,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:23,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:23,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:23,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:23,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532889136] [2020-10-28 09:39:23,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:23,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:39:23,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216561939] [2020-10-28 09:39:23,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:39:23,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:23,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:39:23,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:39:23,742 INFO L87 Difference]: Start difference. First operand 152 states and 205 transitions. Second operand 13 states. [2020-10-28 09:39:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:25,365 INFO L93 Difference]: Finished difference Result 296 states and 417 transitions. [2020-10-28 09:39:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:39:25,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-28 09:39:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:25,369 INFO L225 Difference]: With dead ends: 296 [2020-10-28 09:39:25,369 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 09:39:25,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:39:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 09:39:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2020-10-28 09:39:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 09:39:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2020-10-28 09:39:25,394 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 82 [2020-10-28 09:39:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:25,395 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2020-10-28 09:39:25,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:39:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2020-10-28 09:39:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 09:39:25,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:25,397 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:25,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:39:25,397 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash 681903063, now seen corresponding path program 3 times [2020-10-28 09:39:25,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:25,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597752729] [2020-10-28 09:39:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:39:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:39:25,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:39:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:39:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:39:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:25,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:39:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 4 proven. 109 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:25,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597752729] [2020-10-28 09:39:25,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:25,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:39:25,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954185325] [2020-10-28 09:39:25,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:39:25,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:25,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:39:25,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:39:25,916 INFO L87 Difference]: Start difference. First operand 153 states and 207 transitions. Second operand 13 states. [2020-10-28 09:39:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:27,216 INFO L93 Difference]: Finished difference Result 326 states and 474 transitions. [2020-10-28 09:39:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:39:27,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-28 09:39:27,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:27,220 INFO L225 Difference]: With dead ends: 326 [2020-10-28 09:39:27,220 INFO L226 Difference]: Without dead ends: 210 [2020-10-28 09:39:27,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:39:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-28 09:39:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 158. [2020-10-28 09:39:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-28 09:39:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 214 transitions. [2020-10-28 09:39:27,249 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 214 transitions. Word has length 83 [2020-10-28 09:39:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:27,249 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 214 transitions. [2020-10-28 09:39:27,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:39:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 214 transitions. [2020-10-28 09:39:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 09:39:27,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:27,251 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:27,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:39:27,251 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash -654122856, now seen corresponding path program 4 times [2020-10-28 09:39:27,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:27,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718033940] [2020-10-28 09:39:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 09:39:27,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 09:39:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:39:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:27,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:39:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:27,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:39:27,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 09:39:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:39:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:39:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:39:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:39:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:27,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:27,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:39:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:27,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:27,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:27,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:27,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718033940] [2020-10-28 09:39:27,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:27,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:39:27,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595069662] [2020-10-28 09:39:27,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:39:27,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:27,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:39:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:39:27,927 INFO L87 Difference]: Start difference. First operand 158 states and 214 transitions. Second operand 14 states. [2020-10-28 09:39:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:31,044 INFO L93 Difference]: Finished difference Result 337 states and 480 transitions. [2020-10-28 09:39:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:39:31,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-28 09:39:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:31,047 INFO L225 Difference]: With dead ends: 337 [2020-10-28 09:39:31,047 INFO L226 Difference]: Without dead ends: 216 [2020-10-28 09:39:31,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:39:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-28 09:39:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 160. [2020-10-28 09:39:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-28 09:39:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 215 transitions. [2020-10-28 09:39:31,077 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 215 transitions. Word has length 85 [2020-10-28 09:39:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:31,077 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 215 transitions. [2020-10-28 09:39:31,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:39:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 215 transitions. [2020-10-28 09:39:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:39:31,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:31,086 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:31,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:39:31,086 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:31,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1451775000, now seen corresponding path program 4 times [2020-10-28 09:39:31,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:31,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971080198] [2020-10-28 09:39:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 09:39:31,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 09:39:31,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:39:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:39:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 09:39:31,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 09:39:31,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:39:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 09:39:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:39:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:39:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:31,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:39:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:31,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 4 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:31,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971080198] [2020-10-28 09:39:31,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:31,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:39:31,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458322417] [2020-10-28 09:39:31,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:39:31,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:31,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:39:31,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:39:31,614 INFO L87 Difference]: Start difference. First operand 160 states and 215 transitions. Second operand 14 states. [2020-10-28 09:39:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:34,011 INFO L93 Difference]: Finished difference Result 346 states and 508 transitions. [2020-10-28 09:39:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:39:34,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-28 09:39:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:34,017 INFO L225 Difference]: With dead ends: 346 [2020-10-28 09:39:34,017 INFO L226 Difference]: Without dead ends: 227 [2020-10-28 09:39:34,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:39:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-28 09:39:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 164. [2020-10-28 09:39:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-28 09:39:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 220 transitions. [2020-10-28 09:39:34,053 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 220 transitions. Word has length 86 [2020-10-28 09:39:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:34,053 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 220 transitions. [2020-10-28 09:39:34,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:39:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 220 transitions. [2020-10-28 09:39:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 09:39:34,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:34,055 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:34,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:39:34,055 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1875626089, now seen corresponding path program 5 times [2020-10-28 09:39:34,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:34,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180263] [2020-10-28 09:39:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:39:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:39:34,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 09:39:34,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:39:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:39:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:39:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 09:39:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:34,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:39:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:34,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:34,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:34,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:34,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:34,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:34,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180263] [2020-10-28 09:39:34,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:34,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:39:34,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902291790] [2020-10-28 09:39:34,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:39:34,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:39:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:39:34,893 INFO L87 Difference]: Start difference. First operand 164 states and 220 transitions. Second operand 15 states. [2020-10-28 09:39:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:36,725 INFO L93 Difference]: Finished difference Result 320 states and 452 transitions. [2020-10-28 09:39:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:39:36,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-28 09:39:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:36,731 INFO L225 Difference]: With dead ends: 320 [2020-10-28 09:39:36,731 INFO L226 Difference]: Without dead ends: 208 [2020-10-28 09:39:36,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:39:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-28 09:39:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 165. [2020-10-28 09:39:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 09:39:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 222 transitions. [2020-10-28 09:39:36,761 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 222 transitions. Word has length 88 [2020-10-28 09:39:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:36,761 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 222 transitions. [2020-10-28 09:39:36,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:39:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 222 transitions. [2020-10-28 09:39:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 09:39:36,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:36,763 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:36,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:39:36,763 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash -338969033, now seen corresponding path program 5 times [2020-10-28 09:39:36,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:36,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22475927] [2020-10-28 09:39:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:36,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 09:39:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:37,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:37,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:37,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:37,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 09:39:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 09:39:37,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:37,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:39:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:39:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:39:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:37,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:37,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:37,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:37,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:37,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:39:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:37,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:37,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:39:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:37,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:37,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22475927] [2020-10-28 09:39:37,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:37,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:39:37,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280882310] [2020-10-28 09:39:37,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:39:37,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:37,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:39:37,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=118, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:39:37,364 INFO L87 Difference]: Start difference. First operand 165 states and 222 transitions. Second operand 15 states. [2020-10-28 09:39:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:38,613 INFO L93 Difference]: Finished difference Result 348 states and 511 transitions. [2020-10-28 09:39:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:39:38,614 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-28 09:39:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:38,616 INFO L225 Difference]: With dead ends: 348 [2020-10-28 09:39:38,616 INFO L226 Difference]: Without dead ends: 226 [2020-10-28 09:39:38,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=459, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:39:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-28 09:39:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 170. [2020-10-28 09:39:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 09:39:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 229 transitions. [2020-10-28 09:39:38,649 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 229 transitions. Word has length 89 [2020-10-28 09:39:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:38,649 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 229 transitions. [2020-10-28 09:39:38,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:39:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 229 transitions. [2020-10-28 09:39:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 09:39:38,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:38,651 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:38,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:39:38,651 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:38,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1835303672, now seen corresponding path program 6 times [2020-10-28 09:39:38,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:38,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200084502] [2020-10-28 09:39:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:38,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:39:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:38,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:38,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:38,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:38,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:38,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:38,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:38,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:38,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:39:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:39:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:39,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:39:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:39,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:39:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:39:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:39,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:39,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:39,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:39,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:39,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:39,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 174 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:39,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200084502] [2020-10-28 09:39:39,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:39,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:39:39,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405305477] [2020-10-28 09:39:39,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:39:39,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:39,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:39:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:39:39,455 INFO L87 Difference]: Start difference. First operand 170 states and 229 transitions. Second operand 16 states. [2020-10-28 09:39:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:41,998 INFO L93 Difference]: Finished difference Result 332 states and 471 transitions. [2020-10-28 09:39:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:39:41,999 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 91 [2020-10-28 09:39:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:42,001 INFO L225 Difference]: With dead ends: 332 [2020-10-28 09:39:42,001 INFO L226 Difference]: Without dead ends: 217 [2020-10-28 09:39:42,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:39:42,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-28 09:39:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 171. [2020-10-28 09:39:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-28 09:39:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2020-10-28 09:39:42,033 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 91 [2020-10-28 09:39:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:42,033 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2020-10-28 09:39:42,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:39:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2020-10-28 09:39:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 09:39:42,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:42,035 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:42,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:39:42,036 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1588963960, now seen corresponding path program 6 times [2020-10-28 09:39:42,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:42,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194672233] [2020-10-28 09:39:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:39:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:42,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:42,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:42,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:39:42,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 09:39:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:39:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:39:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:42,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:42,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:39:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:42,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:42,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194672233] [2020-10-28 09:39:42,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:42,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:39:42,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095767838] [2020-10-28 09:39:42,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:39:42,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:42,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:39:42,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:39:42,832 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand 16 states. [2020-10-28 09:39:45,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:45,391 INFO L93 Difference]: Finished difference Result 386 states and 570 transitions. [2020-10-28 09:39:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:39:45,392 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-28 09:39:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:45,395 INFO L225 Difference]: With dead ends: 386 [2020-10-28 09:39:45,396 INFO L226 Difference]: Without dead ends: 261 [2020-10-28 09:39:45,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=545, Invalid=1015, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:39:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-28 09:39:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 176. [2020-10-28 09:39:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-28 09:39:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2020-10-28 09:39:45,432 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 92 [2020-10-28 09:39:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:45,432 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2020-10-28 09:39:45,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:39:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2020-10-28 09:39:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 09:39:45,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:45,433 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:45,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:39:45,435 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1113945591, now seen corresponding path program 7 times [2020-10-28 09:39:45,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:45,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239332368] [2020-10-28 09:39:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 09:39:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-28 09:39:45,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:45,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:39:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 09:39:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:45,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:45,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:45,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:39:45,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:45,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:45,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:45,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:45,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:45,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:46,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:46,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:39:46,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 09:39:46,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:46,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:39:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 09:39:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:39:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:39:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:46,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:46,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:46,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:46,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:39:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:46,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:46,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:46,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:46,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:46,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:46,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239332368] [2020-10-28 09:39:46,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:46,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:39:46,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023839927] [2020-10-28 09:39:46,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:39:46,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:46,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:39:46,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:39:46,519 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand 17 states. [2020-10-28 09:39:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:50,971 INFO L93 Difference]: Finished difference Result 376 states and 537 transitions. [2020-10-28 09:39:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:39:50,971 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-10-28 09:39:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:50,975 INFO L225 Difference]: With dead ends: 376 [2020-10-28 09:39:50,975 INFO L226 Difference]: Without dead ends: 246 [2020-10-28 09:39:50,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=250, Invalid=1642, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 09:39:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-28 09:39:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 178. [2020-10-28 09:39:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:39:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions. [2020-10-28 09:39:51,012 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 94 [2020-10-28 09:39:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:51,013 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions. [2020-10-28 09:39:51,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:39:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions. [2020-10-28 09:39:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 09:39:51,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:51,014 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:51,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:39:51,015 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:51,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1473589399, now seen corresponding path program 7 times [2020-10-28 09:39:51,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:51,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439345157] [2020-10-28 09:39:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 09:39:51,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 09:39:51,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:39:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 09:39:51,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:39:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:39:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:39:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:39:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:39:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:51,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:51,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:51,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 4 proven. 231 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:51,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439345157] [2020-10-28 09:39:51,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:51,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:39:51,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845138821] [2020-10-28 09:39:51,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:39:51,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:39:51,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=151, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:39:51,752 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand 17 states. [2020-10-28 09:39:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:53,681 INFO L93 Difference]: Finished difference Result 370 states and 548 transitions. [2020-10-28 09:39:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:39:53,688 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-10-28 09:39:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:53,691 INFO L225 Difference]: With dead ends: 370 [2020-10-28 09:39:53,691 INFO L226 Difference]: Without dead ends: 242 [2020-10-28 09:39:53,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=388, Invalid=604, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:39:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-28 09:39:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2020-10-28 09:39:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-28 09:39:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 244 transitions. [2020-10-28 09:39:53,728 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 244 transitions. Word has length 95 [2020-10-28 09:39:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:53,728 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 244 transitions. [2020-10-28 09:39:53,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:39:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 244 transitions. [2020-10-28 09:39:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 09:39:53,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:53,730 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:53,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:39:53,731 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:53,731 INFO L82 PathProgramCache]: Analyzing trace with hash -52765352, now seen corresponding path program 8 times [2020-10-28 09:39:53,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:53,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141216971] [2020-10-28 09:39:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 09:39:54,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-28 09:39:54,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:39:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:39:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:39:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:39:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:39:54,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:54,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:39:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:39:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:54,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:39:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:39:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 09:39:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:39:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:39:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 09:39:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:39:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:39:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:39:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:39:54,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:39:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:39:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:39:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:39:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 4 proven. 243 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:39:54,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141216971] [2020-10-28 09:39:54,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:39:54,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:39:54,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300938425] [2020-10-28 09:39:54,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:39:54,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:39:54,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:39:54,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:39:54,835 INFO L87 Difference]: Start difference. First operand 182 states and 244 transitions. Second operand 18 states. [2020-10-28 09:39:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:39:59,634 INFO L93 Difference]: Finished difference Result 387 states and 552 transitions. [2020-10-28 09:39:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:39:59,634 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-10-28 09:39:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:39:59,638 INFO L225 Difference]: With dead ends: 387 [2020-10-28 09:39:59,638 INFO L226 Difference]: Without dead ends: 256 [2020-10-28 09:39:59,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=269, Invalid=1893, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 09:39:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-28 09:39:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 184. [2020-10-28 09:39:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-28 09:39:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 247 transitions. [2020-10-28 09:39:59,677 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 247 transitions. Word has length 97 [2020-10-28 09:39:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:39:59,677 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 247 transitions. [2020-10-28 09:39:59,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:39:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 247 transitions. [2020-10-28 09:39:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 09:39:59,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:39:59,679 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:39:59,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:39:59,679 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:39:59,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:39:59,679 INFO L82 PathProgramCache]: Analyzing trace with hash 10438440, now seen corresponding path program 8 times [2020-10-28 09:39:59,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:39:59,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681479678] [2020-10-28 09:39:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:39:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:39:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:39:59,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:39:59,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 09:39:59,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:39:59,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-28 09:39:59,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:39:59,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:40:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:40:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:00,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:00,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:00,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:00,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:00,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:00,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:00,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:00,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:00,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:40:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:40:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:40:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:00,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:40:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:00,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:00,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:00,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:00,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:00,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 269 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:00,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681479678] [2020-10-28 09:40:00,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:00,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:40:00,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51143541] [2020-10-28 09:40:00,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:40:00,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:00,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:40:00,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:40:00,557 INFO L87 Difference]: Start difference. First operand 184 states and 247 transitions. Second operand 18 states. [2020-10-28 09:40:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:03,596 INFO L93 Difference]: Finished difference Result 410 states and 612 transitions. [2020-10-28 09:40:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:40:03,603 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-28 09:40:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:03,606 INFO L225 Difference]: With dead ends: 410 [2020-10-28 09:40:03,606 INFO L226 Difference]: Without dead ends: 279 [2020-10-28 09:40:03,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=719, Invalid=1351, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 09:40:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-28 09:40:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 188. [2020-10-28 09:40:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-28 09:40:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2020-10-28 09:40:03,647 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 98 [2020-10-28 09:40:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:03,647 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2020-10-28 09:40:03,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:40:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2020-10-28 09:40:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 09:40:03,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:03,649 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:03,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:40:03,649 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1686531159, now seen corresponding path program 9 times [2020-10-28 09:40:03,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:03,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159854004] [2020-10-28 09:40:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 09:40:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:04,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:04,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:40:04,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 09:40:04,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:40:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 09:40:04,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:40:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:04,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 09:40:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:04,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:40:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:04,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:04,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:04,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:04,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159854004] [2020-10-28 09:40:04,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:04,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:40:04,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800527234] [2020-10-28 09:40:04,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:40:04,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:04,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:40:04,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:40:04,905 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand 19 states. [2020-10-28 09:40:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:11,079 INFO L93 Difference]: Finished difference Result 400 states and 571 transitions. [2020-10-28 09:40:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:40:11,080 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-28 09:40:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:11,082 INFO L225 Difference]: With dead ends: 400 [2020-10-28 09:40:11,082 INFO L226 Difference]: Without dead ends: 266 [2020-10-28 09:40:11,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=288, Invalid=2162, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 09:40:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-28 09:40:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 190. [2020-10-28 09:40:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-28 09:40:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 255 transitions. [2020-10-28 09:40:11,131 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 255 transitions. Word has length 100 [2020-10-28 09:40:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:11,132 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 255 transitions. [2020-10-28 09:40:11,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:40:11,132 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 255 transitions. [2020-10-28 09:40:11,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:40:11,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:11,133 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:11,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:40:11,133 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:11,134 INFO L82 PathProgramCache]: Analyzing trace with hash 903305975, now seen corresponding path program 9 times [2020-10-28 09:40:11,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:11,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310394456] [2020-10-28 09:40:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:11,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:11,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 09:40:11,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:40:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:11,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:11,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:11,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:11,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:11,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:40:11,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:11,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:11,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:11,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 09:40:11,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 09:40:11,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:11,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:40:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:11,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 09:40:11,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:40:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:12,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:40:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:12,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:12,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:12,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:12,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:12,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:40:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 4 proven. 310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:12,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310394456] [2020-10-28 09:40:12,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:12,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:40:12,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417843267] [2020-10-28 09:40:12,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:40:12,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:12,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:40:12,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:40:12,053 INFO L87 Difference]: Start difference. First operand 190 states and 255 transitions. Second operand 19 states. [2020-10-28 09:40:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:15,547 INFO L93 Difference]: Finished difference Result 426 states and 638 transitions. [2020-10-28 09:40:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:40:15,549 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-28 09:40:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:15,551 INFO L225 Difference]: With dead ends: 426 [2020-10-28 09:40:15,551 INFO L226 Difference]: Without dead ends: 292 [2020-10-28 09:40:15,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=815, Invalid=1537, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 09:40:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-28 09:40:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 194. [2020-10-28 09:40:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-28 09:40:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 260 transitions. [2020-10-28 09:40:15,594 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 260 transitions. Word has length 101 [2020-10-28 09:40:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:15,595 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 260 transitions. [2020-10-28 09:40:15,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:40:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 260 transitions. [2020-10-28 09:40:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 09:40:15,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:15,597 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:15,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:40:15,597 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1660678072, now seen corresponding path program 10 times [2020-10-28 09:40:15,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:15,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558373870] [2020-10-28 09:40:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:15,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:40:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:40:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 09:40:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:40:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:40:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:40:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:16,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:16,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:16,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:16,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:16,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:16,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:16,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558373870] [2020-10-28 09:40:16,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:16,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:40:16,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958209744] [2020-10-28 09:40:16,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:40:16,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:16,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:40:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:40:16,977 INFO L87 Difference]: Start difference. First operand 194 states and 260 transitions. Second operand 20 states. [2020-10-28 09:40:23,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:23,394 INFO L93 Difference]: Finished difference Result 413 states and 590 transitions. [2020-10-28 09:40:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:40:23,395 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-10-28 09:40:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:23,397 INFO L225 Difference]: With dead ends: 413 [2020-10-28 09:40:23,397 INFO L226 Difference]: Without dead ends: 276 [2020-10-28 09:40:23,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=307, Invalid=2449, Unknown=0, NotChecked=0, Total=2756 [2020-10-28 09:40:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-28 09:40:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 196. [2020-10-28 09:40:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-28 09:40:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 263 transitions. [2020-10-28 09:40:23,439 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 263 transitions. Word has length 103 [2020-10-28 09:40:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:23,439 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 263 transitions. [2020-10-28 09:40:23,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:40:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 263 transitions. [2020-10-28 09:40:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 09:40:23,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:23,441 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:23,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:40:23,441 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1587577032, now seen corresponding path program 10 times [2020-10-28 09:40:23,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:23,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718393549] [2020-10-28 09:40:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 09:40:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:23,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:23,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:23,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:23,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:23,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:23,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:23,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:40:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 09:40:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:24,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:40:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:24,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:40:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:24,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:24,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:40:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:24,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 4 proven. 354 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:24,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718393549] [2020-10-28 09:40:24,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:24,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:40:24,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328497091] [2020-10-28 09:40:24,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:40:24,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:40:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:40:24,494 INFO L87 Difference]: Start difference. First operand 196 states and 263 transitions. Second operand 20 states. [2020-10-28 09:40:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:28,190 INFO L93 Difference]: Finished difference Result 442 states and 664 transitions. [2020-10-28 09:40:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:40:28,197 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-28 09:40:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:28,200 INFO L225 Difference]: With dead ends: 442 [2020-10-28 09:40:28,200 INFO L226 Difference]: Without dead ends: 305 [2020-10-28 09:40:28,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=917, Invalid=1735, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 09:40:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-28 09:40:28,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 200. [2020-10-28 09:40:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-28 09:40:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 268 transitions. [2020-10-28 09:40:28,245 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 268 transitions. Word has length 104 [2020-10-28 09:40:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:28,245 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 268 transitions. [2020-10-28 09:40:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:40:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 268 transitions. [2020-10-28 09:40:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 09:40:28,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:28,247 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:28,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:40:28,247 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2115167561, now seen corresponding path program 11 times [2020-10-28 09:40:28,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:28,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909078444] [2020-10-28 09:40:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:28,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 09:40:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:28,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:28,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 09:40:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:29,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:40:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:29,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 09:40:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:29,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:29,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:29,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:29,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:29,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:40:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 369 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:29,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909078444] [2020-10-28 09:40:29,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:29,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:40:29,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447376840] [2020-10-28 09:40:29,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:40:29,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:29,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:40:29,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:40:29,816 INFO L87 Difference]: Start difference. First operand 200 states and 268 transitions. Second operand 21 states. [2020-10-28 09:40:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:36,755 INFO L93 Difference]: Finished difference Result 426 states and 609 transitions. [2020-10-28 09:40:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:40:36,756 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-28 09:40:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:36,758 INFO L225 Difference]: With dead ends: 426 [2020-10-28 09:40:36,759 INFO L226 Difference]: Without dead ends: 286 [2020-10-28 09:40:36,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=326, Invalid=2754, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 09:40:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-28 09:40:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 202. [2020-10-28 09:40:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 09:40:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 271 transitions. [2020-10-28 09:40:36,804 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 271 transitions. Word has length 106 [2020-10-28 09:40:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:36,804 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 271 transitions. [2020-10-28 09:40:36,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:40:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 271 transitions. [2020-10-28 09:40:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 09:40:36,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:36,806 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:36,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:40:36,806 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1503117993, now seen corresponding path program 11 times [2020-10-28 09:40:36,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:36,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030521061] [2020-10-28 09:40:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 09:40:37,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 09:40:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:37,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 09:40:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:40:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:37,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:40:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:37,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:37,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:37,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:37,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:40:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 4 proven. 401 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:37,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030521061] [2020-10-28 09:40:37,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:37,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:40:37,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275080479] [2020-10-28 09:40:37,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:40:37,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:37,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:40:37,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:40:37,968 INFO L87 Difference]: Start difference. First operand 202 states and 271 transitions. Second operand 21 states. [2020-10-28 09:40:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:42,254 INFO L93 Difference]: Finished difference Result 458 states and 690 transitions. [2020-10-28 09:40:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:40:42,257 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-28 09:40:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:42,260 INFO L225 Difference]: With dead ends: 458 [2020-10-28 09:40:42,260 INFO L226 Difference]: Without dead ends: 318 [2020-10-28 09:40:42,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1025, Invalid=1945, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 09:40:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-28 09:40:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 206. [2020-10-28 09:40:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-28 09:40:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 276 transitions. [2020-10-28 09:40:42,313 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 276 transitions. Word has length 107 [2020-10-28 09:40:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:42,314 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 276 transitions. [2020-10-28 09:40:42,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:40:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 276 transitions. [2020-10-28 09:40:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:40:42,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:42,315 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:42,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:40:42,316 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash -220349928, now seen corresponding path program 12 times [2020-10-28 09:40:42,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:42,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165073185] [2020-10-28 09:40:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:40:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:40:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:42,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:42,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:42,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:42,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:42,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:40:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-28 09:40:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:43,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:40:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 09:40:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:43,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:40:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:43,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:43,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:43,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:43,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:43,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:43,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:40:43,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:40:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:43,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:43,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:43,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:43,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:40:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:43,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:43,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 4 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:43,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165073185] [2020-10-28 09:40:43,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:43,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:40:43,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743686801] [2020-10-28 09:40:43,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:40:43,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:43,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:40:43,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:40:43,906 INFO L87 Difference]: Start difference. First operand 206 states and 276 transitions. Second operand 22 states. [2020-10-28 09:40:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:51,862 INFO L93 Difference]: Finished difference Result 439 states and 628 transitions. [2020-10-28 09:40:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:40:51,863 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-28 09:40:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:51,866 INFO L225 Difference]: With dead ends: 439 [2020-10-28 09:40:51,866 INFO L226 Difference]: Without dead ends: 296 [2020-10-28 09:40:51,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=345, Invalid=3077, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 09:40:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-28 09:40:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 208. [2020-10-28 09:40:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-28 09:40:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 279 transitions. [2020-10-28 09:40:51,913 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 279 transitions. Word has length 109 [2020-10-28 09:40:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:51,914 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 279 transitions. [2020-10-28 09:40:51,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:40:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 279 transitions. [2020-10-28 09:40:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 09:40:51,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:51,915 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:51,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 09:40:51,915 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash -889716120, now seen corresponding path program 12 times [2020-10-28 09:40:51,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:51,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223338393] [2020-10-28 09:40:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:52,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:52,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 09:40:52,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-28 09:40:52,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:52,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:40:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:52,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 09:40:52,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:40:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:52,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:40:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:52,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:40:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:40:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 09:40:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:52,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:40:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:40:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 09:40:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:53,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:40:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:40:53,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:40:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:53,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:40:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:40:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:53,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:53,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:40:53,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:53,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:53,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:40:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:40:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:40:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:40:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:53,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:40:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 09:40:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:40:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:40:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 4 proven. 451 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:40:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223338393] [2020-10-28 09:40:53,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:40:53,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:40:53,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543441387] [2020-10-28 09:40:53,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:40:53,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:40:53,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:40:53,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:40:53,398 INFO L87 Difference]: Start difference. First operand 208 states and 279 transitions. Second operand 22 states. [2020-10-28 09:40:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:40:59,261 INFO L93 Difference]: Finished difference Result 474 states and 716 transitions. [2020-10-28 09:40:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:40:59,268 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2020-10-28 09:40:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:40:59,272 INFO L225 Difference]: With dead ends: 474 [2020-10-28 09:40:59,272 INFO L226 Difference]: Without dead ends: 331 [2020-10-28 09:40:59,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1139, Invalid=2167, Unknown=0, NotChecked=0, Total=3306 [2020-10-28 09:40:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-28 09:40:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 212. [2020-10-28 09:40:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-28 09:40:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 284 transitions. [2020-10-28 09:40:59,328 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 284 transitions. Word has length 110 [2020-10-28 09:40:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:40:59,331 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 284 transitions. [2020-10-28 09:40:59,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:40:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 284 transitions. [2020-10-28 09:40:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 09:40:59,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:40:59,333 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:40:59,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 09:40:59,333 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:40:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:40:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash 848330473, now seen corresponding path program 13 times [2020-10-28 09:40:59,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:40:59,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149220946] [2020-10-28 09:40:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:40:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:40:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:40:59,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:40:59,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 09:40:59,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:40:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-28 09:40:59,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:40:59,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:40:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:40:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:40:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 09:40:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:41:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:41:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:41:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:41:00,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:41:00,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:41:00,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:41:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:41:00,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:41:00,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:41:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:41:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:41:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:41:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:41:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:41:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:41:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:41:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:41:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:41:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:41:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:41:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:41:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:41:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:41:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:41:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:41:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:41:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:41:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:41:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...