/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/reducercommutativity/sum40-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:31:48,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:31:48,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:31:48,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:31:48,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:31:48,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:31:48,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:31:48,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:31:48,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:31:48,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:31:48,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:31:48,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:31:48,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:31:48,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:31:48,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:31:48,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:31:48,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:31:48,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:31:48,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:31:48,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:31:48,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:31:48,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:31:48,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:31:48,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:31:48,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:31:48,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:31:48,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:31:48,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:31:48,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:31:48,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:31:48,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:31:48,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:31:48,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:31:48,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:31:48,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:31:48,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:31:48,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:31:48,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:31:48,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:31:48,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:31:48,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:31:48,773 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 17:31:48,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:31:48,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:31:48,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:31:48,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:31:48,838 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:31:48,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:31:48,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:31:48,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:31:48,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:31:48,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:31:48,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:31:48,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:31:48,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:31:48,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:31:48,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:31:48,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:31:48,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:31:48,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:31:48,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:31:48,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:31:48,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:31:48,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:31:48,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:31:48,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:31:48,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:31:48,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:31:48,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:31:48,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:31:48,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:31:48,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:31:49,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:31:49,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:31:49,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:31:49,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:31:49,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:31:49,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum40-2.i [2020-10-28 17:31:49,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a94d6dc2/fca73ada5aee4bf4ad9c5ddfdf6aa3c2/FLAG2bee21f67 [2020-10-28 17:31:50,088 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:31:50,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum40-2.i [2020-10-28 17:31:50,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a94d6dc2/fca73ada5aee4bf4ad9c5ddfdf6aa3c2/FLAG2bee21f67 [2020-10-28 17:31:50,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a94d6dc2/fca73ada5aee4bf4ad9c5ddfdf6aa3c2 [2020-10-28 17:31:50,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:31:50,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:31:50,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:31:50,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:31:50,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:31:50,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7496719c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50, skipping insertion in model container [2020-10-28 17:31:50,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:31:50,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:31:50,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:31:50,421 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:31:50,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:31:50,463 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:31:50,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50 WrapperNode [2020-10-28 17:31:50,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:31:50,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:31:50,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:31:50,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:31:50,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (1/1) ... [2020-10-28 17:31:50,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:31:50,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:31:50,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:31:50,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:31:50,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (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 17:31:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:31:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:31:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:31:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-28 17:31:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:31:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:31:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:31:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:31:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:31:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:31:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:31:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:31:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-28 17:31:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:31:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:31:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:31:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:31:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:31:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:31:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:31:51,003 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:31:51,004 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:31:51,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:31:51 BoogieIcfgContainer [2020-10-28 17:31:51,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:31:51,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:31:51,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:31:51,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:31:51,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:31:50" (1/3) ... [2020-10-28 17:31:51,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dc5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:31:51, skipping insertion in model container [2020-10-28 17:31:51,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:31:50" (2/3) ... [2020-10-28 17:31:51,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dc5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:31:51, skipping insertion in model container [2020-10-28 17:31:51,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:31:51" (3/3) ... [2020-10-28 17:31:51,050 INFO L111 eAbstractionObserver]: Analyzing ICFG sum40-2.i [2020-10-28 17:31:51,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:31:51,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:31:51,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:31:51,127 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:31:51,127 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:31:51,128 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:31:51,128 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:31:51,128 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:31:51,128 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:31:51,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:31:51,129 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:31:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 17:31:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:31:51,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:51,158 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:31:51,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:51,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-28 17:31:51,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:51,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273455337] [2020-10-28 17:31:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:51,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:52,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:52,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:31:52,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-28 17:31:52,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:52,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:31:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:31:52,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:31:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:52,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:31:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:52,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:52,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:52,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:31:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:52,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:31:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:31:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:53,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:31:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:53,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:53,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:53,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:31:53,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:53,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:31:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:31:53,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273455337] [2020-10-28 17:31:53,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:53,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 17:31:53,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466424482] [2020-10-28 17:31:53,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:31:53,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:53,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:31:53,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:31:53,074 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 17:31:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:53,192 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 17:31:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:31:53,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:31:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:53,204 INFO L225 Difference]: With dead ends: 60 [2020-10-28 17:31:53,204 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 17:31:53,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:31:53,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 17:31:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 17:31:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 17:31:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 17:31:53,261 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 17:31:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:53,261 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 17:31:53,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:31:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 17:31:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:31:53,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:53,264 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:31:53,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:31:53,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:53,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-28 17:31:53,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:53,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35002263] [2020-10-28 17:31:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:55,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:31:55,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1799 [2020-10-28 17:31:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:55,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:31:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:31:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:55,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:55,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:31:55,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:55,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:55,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:55,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:55,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:55,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:31:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:55,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:55,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:31:55,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:55,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:55,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:31:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:55,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:55,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:55,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:55,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:31:55,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:55,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:55,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:55,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:31:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:55,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:55,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:31:55,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:55,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:55,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:55,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:55,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:55,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:31:55,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35002263] [2020-10-28 17:31:55,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:31:55,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:31:55,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695699170] [2020-10-28 17:31:55,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:31:55,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:31:55,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:55,243 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 17:31:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:55,341 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-28 17:31:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:31:55,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:31:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:55,343 INFO L225 Difference]: With dead ends: 50 [2020-10-28 17:31:55,343 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:31:55,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:31:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 17:31:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 17:31:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 17:31:55,356 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 17:31:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:55,357 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 17:31:55,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:31:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 17:31:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:31:55,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:55,359 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 17:31:55,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:31:55,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1356580685, now seen corresponding path program 1 times [2020-10-28 17:31:55,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:55,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033617544] [2020-10-28 17:31:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:57,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:31:57,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-28 17:31:57,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:57,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:31:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:57,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:57,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:31:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:57,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:57,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:57,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:31:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:57,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:31:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:57,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:57,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:31:57,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:57,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:31:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:57,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:57,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:31:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:31:57,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:57,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:31:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:31:57,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033617544] [2020-10-28 17:31:57,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:57,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:31:57,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636762180] [2020-10-28 17:31:57,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:31:57,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:31:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:57,822 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 17:31:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:57,970 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 17:31:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:31:57,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:31:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:57,972 INFO L225 Difference]: With dead ends: 52 [2020-10-28 17:31:57,972 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:31:57,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:31:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 17:31:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 17:31:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 17:31:57,981 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-28 17:31:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:57,982 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 17:31:57,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:31:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 17:31:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:31:57,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:57,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 17:31:57,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:31:57,984 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash 527968149, now seen corresponding path program 2 times [2020-10-28 17:31:57,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:57,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729943673] [2020-10-28 17:31:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:01,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:32:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:32:01,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3014 [2020-10-28 17:32:01,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:01,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:32:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:32:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:32:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:32:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:32:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:01,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:01,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:32:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:01,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:32:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:01,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:32:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:01,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:32:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:01,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:01,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:32:01,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:01,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:32:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:32:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:32:01,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729943673] [2020-10-28 17:32:01,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:32:01,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:32:01,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561404787] [2020-10-28 17:32:01,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:32:01,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:01,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:32:01,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:32:01,144 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 17:32:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:01,258 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 17:32:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:32:01,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:32:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:01,260 INFO L225 Difference]: With dead ends: 52 [2020-10-28 17:32:01,260 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 17:32:01,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 17:32:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 17:32:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 17:32:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 17:32:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 17:32:01,269 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-10-28 17:32:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:01,269 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 17:32:01,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:32:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 17:32:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 17:32:01,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:01,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-28 17:32:01,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:32:01,272 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:01,272 INFO L82 PathProgramCache]: Analyzing trace with hash 147249011, now seen corresponding path program 1 times [2020-10-28 17:32:01,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:01,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30241644] [2020-10-28 17:32:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:32:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:32:06,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:32:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:32:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:32:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:32:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:32:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:32:06,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:32:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:32:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:32:06,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:32:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:32:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:32:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:32:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:32:06,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:32:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 17:32:06,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30241644] [2020-10-28 17:32:06,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:06,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:32:06,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857918879] [2020-10-28 17:32:06,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:32:06,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:06,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:32:06,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:32:06,454 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 17:32:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:06,644 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-28 17:32:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:32:06,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 17:32:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:06,648 INFO L225 Difference]: With dead ends: 55 [2020-10-28 17:32:06,649 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 17:32:06,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 17:32:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 17:32:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 17:32:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 17:32:06,667 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 44 [2020-10-28 17:32:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:06,667 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 17:32:06,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:32:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 17:32:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:32:06,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:06,675 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 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] [2020-10-28 17:32:06,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:32:06,675 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-28 17:32:06,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:06,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473031265] [2020-10-28 17:32:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:32:11,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:32:11,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:32:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 17:32:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:32:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:11,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:32:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:32:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:11,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:32:11,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:32:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:11,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:32:11,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:32:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:11,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:32:11,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 17:32:11,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473031265] [2020-10-28 17:32:11,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:32:11,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:32:11,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597036311] [2020-10-28 17:32:11,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:32:11,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:11,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:32:11,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:32:11,915 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 17:32:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:12,014 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 17:32:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:32:12,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 17:32:12,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:12,018 INFO L225 Difference]: With dead ends: 53 [2020-10-28 17:32:12,018 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 17:32:12,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:32:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 17:32:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 17:32:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 17:32:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 17:32:12,032 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 17:32:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:12,037 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 17:32:12,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:32:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 17:32:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 17:32:12,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:12,038 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 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] [2020-10-28 17:32:12,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:32:12,041 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1352891471, now seen corresponding path program 1 times [2020-10-28 17:32:12,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:12,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924710210] [2020-10-28 17:32:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:32:17,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 17:32:17,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:32:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:17,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:17,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:32:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:17,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:32:17,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:32:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:32:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:32:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:32:17,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:17,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-28 17:32:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924710210] [2020-10-28 17:32:17,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:17,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:32:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15539701] [2020-10-28 17:32:17,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:17,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:17,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:17,257 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 17:32:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:17,469 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-28 17:32:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:17,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 17:32:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:17,473 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:32:17,473 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 17:32:17,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 17:32:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 17:32:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 17:32:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 17:32:17,484 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 17:32:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:17,486 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 17:32:17,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 17:32:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:32:17,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:17,488 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 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] [2020-10-28 17:32:17,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:32:17,488 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:17,489 INFO L82 PathProgramCache]: Analyzing trace with hash -67135571, now seen corresponding path program 2 times [2020-10-28 17:32:17,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:17,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256338944] [2020-10-28 17:32:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 17:32:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:32:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:22,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:22,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:22,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:22,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:32:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:22,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:22,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:32:22,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:22,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:22,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:32:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:22,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:22,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:22,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:32:22,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:22,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:32:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:32:22,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:22,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:22,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 17:32:22,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256338944] [2020-10-28 17:32:22,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:22,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:32:22,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134038304] [2020-10-28 17:32:22,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:22,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:22,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:22,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:22,732 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 17:32:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:22,841 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-28 17:32:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:22,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 17:32:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:22,843 INFO L225 Difference]: With dead ends: 66 [2020-10-28 17:32:22,843 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 17:32:22,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 17:32:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 17:32:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 17:32:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 17:32:22,857 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-28 17:32:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:22,858 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 17:32:22,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 17:32:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 17:32:22,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:22,859 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 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] [2020-10-28 17:32:22,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:32:22,859 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:22,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1202302705, now seen corresponding path program 3 times [2020-10-28 17:32:22,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:22,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633109813] [2020-10-28 17:32:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 17:32:27,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:27,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:32:27,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:32:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 17:32:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:32:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:32:27,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:27,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:32:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:28,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:28,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:32:28,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:28,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 17:32:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:32:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:28,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 17:32:28,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633109813] [2020-10-28 17:32:28,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:28,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:32:28,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358156826] [2020-10-28 17:32:28,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:32:28,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:32:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:32:28,040 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 17:32:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:28,127 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 17:32:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:32:28,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 17:32:28,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:28,129 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:32:28,129 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 17:32:28,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:32:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 17:32:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 17:32:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 17:32:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 17:32:28,137 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 17:32:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:28,137 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 17:32:28,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:32:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 17:32:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:32:28,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:28,139 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 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] [2020-10-28 17:32:28,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:32:28,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:28,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1065768205, now seen corresponding path program 4 times [2020-10-28 17:32:28,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:28,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235171087] [2020-10-28 17:32:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:33,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:33,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:33,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:33,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:33,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:33,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:32:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:33,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:33,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:33,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:33,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:32:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:32:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:32:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:33,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:33,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:32:33,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:33,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 17:32:33,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235171087] [2020-10-28 17:32:33,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:33,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:32:33,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852275944] [2020-10-28 17:32:33,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:32:33,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:32:33,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:33,362 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 17:32:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:33,464 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-28 17:32:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:32:33,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 17:32:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:33,465 INFO L225 Difference]: With dead ends: 72 [2020-10-28 17:32:33,465 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 17:32:33,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 17:32:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 17:32:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 17:32:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 17:32:33,472 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 17:32:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:33,473 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 17:32:33,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:32:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 17:32:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:32:33,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:33,474 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 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] [2020-10-28 17:32:33,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:32:33,474 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash 356355439, now seen corresponding path program 5 times [2020-10-28 17:32:33,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:33,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370275246] [2020-10-28 17:32:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:38,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:32:38,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:32:38,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:38,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:38,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:32:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:38,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:38,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:32:38,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:38,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:38,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:38,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:38,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:38,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:32:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:32:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:38,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:32:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:32:38,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 17:32:38,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370275246] [2020-10-28 17:32:38,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:38,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:32:38,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932387818] [2020-10-28 17:32:38,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:32:38,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:38,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:32:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:38,671 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 17:32:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:38,788 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-28 17:32:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:32:38,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-28 17:32:38,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:38,790 INFO L225 Difference]: With dead ends: 74 [2020-10-28 17:32:38,790 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:32:38,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:32:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 17:32:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:32:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 17:32:38,806 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-28 17:32:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:38,806 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 17:32:38,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:32:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 17:32:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:32:38,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:38,810 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 3, 3, 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] [2020-10-28 17:32:38,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:32:38,810 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:38,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1510487377, now seen corresponding path program 6 times [2020-10-28 17:32:38,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:38,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25238082] [2020-10-28 17:32:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:38,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 17:32:43,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:32:43,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 17:32:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:43,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:43,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:43,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:43,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:32:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:43,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:32:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:43,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:32:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 17:32:43,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25238082] [2020-10-28 17:32:43,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:43,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:32:43,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291697336] [2020-10-28 17:32:43,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:32:43,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:32:43,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:43,994 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 17:32:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:44,185 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 17:32:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:32:44,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-28 17:32:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:44,187 INFO L225 Difference]: With dead ends: 75 [2020-10-28 17:32:44,187 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 17:32:44,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:32:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 17:32:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 17:32:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:32:44,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 17:32:44,192 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 66 [2020-10-28 17:32:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:44,192 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 17:32:44,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:32:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 17:32:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:32:44,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:44,193 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 3, 3, 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] [2020-10-28 17:32:44,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:32:44,193 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:44,194 INFO L82 PathProgramCache]: Analyzing trace with hash -100866513, now seen corresponding path program 7 times [2020-10-28 17:32:44,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:44,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043668810] [2020-10-28 17:32:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 17:32:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:49,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:32:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:32:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 17:32:49,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043668810] [2020-10-28 17:32:49,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:49,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:32:49,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887646811] [2020-10-28 17:32:49,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:32:49,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:49,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:32:49,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:49,408 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 17:32:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:49,696 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-28 17:32:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:32:49,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-28 17:32:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:49,698 INFO L225 Difference]: With dead ends: 79 [2020-10-28 17:32:49,698 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 17:32:49,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:32:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 17:32:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 17:32:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 17:32:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 17:32:49,707 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-28 17:32:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:49,708 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 17:32:49,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:32:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 17:32:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:32:49,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:49,709 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 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] [2020-10-28 17:32:49,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:32:49,709 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash 773961869, now seen corresponding path program 8 times [2020-10-28 17:32:49,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:49,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367930383] [2020-10-28 17:32:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:32:54,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:32:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:32:54,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:32:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:54,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:54,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:54,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:32:54,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:54,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:32:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:54,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:32:54,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:32:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:32:54,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:32:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:32:54,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 17:32:54,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367930383] [2020-10-28 17:32:54,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:54,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:32:54,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962960135] [2020-10-28 17:32:54,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:54,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:54,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:54,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:54,994 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 17:32:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:55,101 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-28 17:32:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:55,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 17:32:55,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:55,103 INFO L225 Difference]: With dead ends: 75 [2020-10-28 17:32:55,103 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 17:32:55,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 17:32:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 17:32:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:32:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 17:32:55,119 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 17:32:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:55,119 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 17:32:55,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 17:32:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:32:55,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:55,120 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 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] [2020-10-28 17:32:55,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:32:55,120 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:55,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1570956555, now seen corresponding path program 9 times [2020-10-28 17:32:55,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:55,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032922699] [2020-10-28 17:32:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:00,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:00,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:00,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:00,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:00,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:33:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:00,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:33:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:00,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:33:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:33:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:33:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:00,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:33:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:33:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:00,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:33:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:33:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 17:33:00,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032922699] [2020-10-28 17:33:00,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:00,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:33:00,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541497478] [2020-10-28 17:33:00,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:00,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:00,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:00,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:00,464 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 17:33:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:00,770 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 17:33:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:33:00,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 17:33:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:00,772 INFO L225 Difference]: With dead ends: 87 [2020-10-28 17:33:00,772 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 17:33:00,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:33:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 17:33:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 17:33:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 17:33:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 17:33:00,782 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 17:33:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:00,782 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 17:33:00,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 17:33:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:33:00,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:00,784 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 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] [2020-10-28 17:33:00,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:33:00,785 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:00,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2099887767, now seen corresponding path program 10 times [2020-10-28 17:33:00,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:00,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527126604] [2020-10-28 17:33:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:33:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:33:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:33:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:05,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:05,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:05,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:33:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:33:05,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:33:05,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:33:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:33:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:33:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:06,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:33:06,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:33:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:06,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:33:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:33:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:33:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 17:33:06,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:06,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:33:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 17:33:06,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527126604] [2020-10-28 17:33:06,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:06,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:33:06,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939024495] [2020-10-28 17:33:06,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:33:06,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:06,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:33:06,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:33:06,148 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 17:33:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:06,458 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-28 17:33:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:33:06,460 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 17:33:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:06,461 INFO L225 Difference]: With dead ends: 91 [2020-10-28 17:33:06,461 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 17:33:06,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:33:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 17:33:06,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 17:33:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:33:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 17:33:06,473 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-28 17:33:06,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:06,474 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 17:33:06,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:33:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 17:33:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:33:06,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:06,478 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 5, 5, 3, 3, 3, 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] [2020-10-28 17:33:06,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:33:06,478 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:06,479 INFO L82 PathProgramCache]: Analyzing trace with hash -773972153, now seen corresponding path program 11 times [2020-10-28 17:33:06,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:06,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182773162] [2020-10-28 17:33:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:33:11,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:11,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:33:11,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:33:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:33:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:11,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:11,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:33:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:33:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:11,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:33:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:11,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:33:11,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 17:33:11,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182773162] [2020-10-28 17:33:11,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:11,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:33:11,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906745552] [2020-10-28 17:33:11,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:11,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:11,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:11,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:11,791 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 17:33:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:11,920 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-28 17:33:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:33:11,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 17:33:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:11,921 INFO L225 Difference]: With dead ends: 96 [2020-10-28 17:33:11,922 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:33:11,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:33:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 17:33:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 17:33:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 17:33:11,930 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 92 [2020-10-28 17:33:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:11,930 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 17:33:11,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 17:33:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 17:33:11,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:11,931 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 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] [2020-10-28 17:33:11,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:33:11,931 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:11,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:11,932 INFO L82 PathProgramCache]: Analyzing trace with hash -96468951, now seen corresponding path program 12 times [2020-10-28 17:33:11,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:11,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715080181] [2020-10-28 17:33:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:16,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:16,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 17:33:16,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:33:16,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:16,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:33:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:33:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:17,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:33:17,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 17:33:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:17,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:17,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:33:17,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:33:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:33:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:33:17,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 17:33:17,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715080181] [2020-10-28 17:33:17,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:17,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:33:17,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679880760] [2020-10-28 17:33:17,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:33:17,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:17,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:33:17,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:33:17,293 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 17:33:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:17,446 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-28 17:33:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:33:17,446 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-28 17:33:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:17,447 INFO L225 Difference]: With dead ends: 98 [2020-10-28 17:33:17,447 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:33:17,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:33:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:33:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 17:33:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:33:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 17:33:17,454 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-28 17:33:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:17,455 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 17:33:17,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:33:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 17:33:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 17:33:17,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:17,456 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 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] [2020-10-28 17:33:17,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:33:17,456 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:17,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1850920821, now seen corresponding path program 13 times [2020-10-28 17:33:17,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:17,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147037297] [2020-10-28 17:33:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:22,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 17:33:22,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:33:22,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:22,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:33:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 17:33:22,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:33:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:22,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:22,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:22,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:22,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:22,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:33:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:22,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:22,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 17:33:22,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:22,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:33:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:22,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:22,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:33:22,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:22,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:33:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:22,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:22,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:33:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 17:33:22,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147037297] [2020-10-28 17:33:22,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:22,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:33:22,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408263929] [2020-10-28 17:33:22,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:33:22,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:22,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:33:22,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:33:22,726 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 17:33:22,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:22,856 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 17:33:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:33:22,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 17:33:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:22,858 INFO L225 Difference]: With dead ends: 89 [2020-10-28 17:33:22,858 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:33:22,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:33:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:33:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 17:33:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 17:33:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 17:33:22,865 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 17:33:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:22,865 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 17:33:22,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:33:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 17:33:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:33:22,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:22,866 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 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] [2020-10-28 17:33:22,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:33:22,866 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1286956425, now seen corresponding path program 14 times [2020-10-28 17:33:22,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:22,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216045095] [2020-10-28 17:33:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:27,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:27,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:33:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:27,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:33:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:27,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:27,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:33:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:33:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:33:28,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:33:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-28 17:33:28,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216045095] [2020-10-28 17:33:28,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:28,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:33:28,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826232682] [2020-10-28 17:33:28,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:33:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:33:28,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:33:28,207 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 17:33:28,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:28,607 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-28 17:33:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:33:28,607 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 17:33:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:28,608 INFO L225 Difference]: With dead ends: 103 [2020-10-28 17:33:28,608 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 17:33:28,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:33:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 17:33:28,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 17:33:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 17:33:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 17:33:28,616 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 17:33:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:28,617 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 17:33:28,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:33:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 17:33:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:33:28,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:28,622 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 4, 4, 3, 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] [2020-10-28 17:33:28,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:33:28,623 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:28,624 INFO L82 PathProgramCache]: Analyzing trace with hash 375589479, now seen corresponding path program 15 times [2020-10-28 17:33:28,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:28,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248390377] [2020-10-28 17:33:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:33,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:33:33,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 17:33:33,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:33,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:33:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:33:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:33,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:33,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:33,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:33,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:33,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:33:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:33:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:33:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:33,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:33,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:33,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:33,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:33:33,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:33,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:33,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-28 17:33:33,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248390377] [2020-10-28 17:33:33,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:33,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:33:33,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478119718] [2020-10-28 17:33:33,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:33:33,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:33,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:33:33,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:33:33,986 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 17:33:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:34,102 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-28 17:33:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:33:34,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-28 17:33:34,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:34,103 INFO L225 Difference]: With dead ends: 108 [2020-10-28 17:33:34,104 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 17:33:34,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:33:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 17:33:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 17:33:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 17:33:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 17:33:34,111 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-28 17:33:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:34,111 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 17:33:34,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:33:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 17:33:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:33:34,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:34,112 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 4, 4, 3, 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] [2020-10-28 17:33:34,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:33:34,113 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash -358569911, now seen corresponding path program 16 times [2020-10-28 17:33:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:34,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374383404] [2020-10-28 17:33:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:33:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 17:33:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:33:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:33:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:39,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:39,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 17:33:39,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:39,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:33:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:39,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:39,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:33:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 17:33:39,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374383404] [2020-10-28 17:33:39,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:39,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:33:39,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691801217] [2020-10-28 17:33:39,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:33:39,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:39,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:33:39,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:33:39,433 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 17:33:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:39,589 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-28 17:33:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:33:39,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 17:33:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:39,591 INFO L225 Difference]: With dead ends: 97 [2020-10-28 17:33:39,591 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 17:33:39,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:33:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 17:33:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 17:33:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 17:33:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 17:33:39,602 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 17:33:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:39,602 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 17:33:39,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:33:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 17:33:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:33:39,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:39,604 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 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] [2020-10-28 17:33:39,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:33:39,605 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:39,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1219924537, now seen corresponding path program 17 times [2020-10-28 17:33:39,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:39,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581050208] [2020-10-28 17:33:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 17:33:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:33:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:44,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:33:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:33:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:33:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:44,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:33:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:44,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-28 17:33:44,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581050208] [2020-10-28 17:33:44,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:44,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:33:44,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482558275] [2020-10-28 17:33:44,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:33:44,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:44,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:33:44,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:33:44,996 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 17:33:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:45,427 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-28 17:33:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:33:45,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 17:33:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:45,428 INFO L225 Difference]: With dead ends: 113 [2020-10-28 17:33:45,428 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 17:33:45,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:33:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 17:33:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 17:33:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 17:33:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 17:33:45,437 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 17:33:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:45,437 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 17:33:45,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:33:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 17:33:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 17:33:45,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:45,439 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 5, 5, 3, 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] [2020-10-28 17:33:45,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:33:45,439 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:45,439 INFO L82 PathProgramCache]: Analyzing trace with hash 112757541, now seen corresponding path program 18 times [2020-10-28 17:33:45,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:45,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358101641] [2020-10-28 17:33:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 17:33:50,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 17:33:50,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:33:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:33:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:33:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:33:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:50,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:33:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:33:50,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:33:50,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:33:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:33:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:33:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:33:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-28 17:33:50,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358101641] [2020-10-28 17:33:50,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:50,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:33:50,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866944658] [2020-10-28 17:33:50,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:33:50,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:50,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:33:50,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:33:50,942 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 17:33:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:51,453 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-28 17:33:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:33:51,454 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-28 17:33:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:51,455 INFO L225 Difference]: With dead ends: 117 [2020-10-28 17:33:51,455 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:33:51,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:33:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:33:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 17:33:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 17:33:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 17:33:51,462 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-28 17:33:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:51,463 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 17:33:51,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:33:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 17:33:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 17:33:51,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:51,464 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 5, 5, 3, 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] [2020-10-28 17:33:51,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:33:51,465 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:51,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1720576515, now seen corresponding path program 19 times [2020-10-28 17:33:51,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:51,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410230682] [2020-10-28 17:33:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:33:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:56,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:33:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:33:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:33:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:56,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:56,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:33:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 17:33:56,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410230682] [2020-10-28 17:33:56,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:56,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:33:56,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772917664] [2020-10-28 17:33:56,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:33:56,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:56,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:33:56,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:33:56,889 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 17:33:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:57,027 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-28 17:33:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:33:57,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-28 17:33:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:57,028 INFO L225 Difference]: With dead ends: 122 [2020-10-28 17:33:57,028 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 17:33:57,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:33:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 17:33:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 17:33:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 17:33:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 17:33:57,034 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-28 17:33:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:57,034 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 17:33:57,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:33:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 17:33:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 17:33:57,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:57,036 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 5, 5, 3, 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] [2020-10-28 17:33:57,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:33:57,036 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:57,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2081979419, now seen corresponding path program 20 times [2020-10-28 17:33:57,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:57,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693020090] [2020-10-28 17:33:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 17:34:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:34:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:02,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:02,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:02,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:02,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:34:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:02,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:34:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:02,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:02,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:34:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 17:34:02,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693020090] [2020-10-28 17:34:02,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:02,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:34:02,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818246939] [2020-10-28 17:34:02,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:34:02,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:02,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:34:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:34:02,460 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 17:34:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:02,591 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-10-28 17:34:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:34:02,592 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-28 17:34:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:02,593 INFO L225 Difference]: With dead ends: 124 [2020-10-28 17:34:02,593 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:34:02,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:34:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:34:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 17:34:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 17:34:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 17:34:02,599 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-28 17:34:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:02,600 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 17:34:02,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:34:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 17:34:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 17:34:02,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:02,601 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 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] [2020-10-28 17:34:02,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:34:02,602 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:02,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1321063097, now seen corresponding path program 21 times [2020-10-28 17:34:02,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:02,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860472936] [2020-10-28 17:34:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:07,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 17:34:07,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:34:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:34:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 17:34:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:07,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:34:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:34:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:08,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 17:34:08,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860472936] [2020-10-28 17:34:08,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:08,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:34:08,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565351652] [2020-10-28 17:34:08,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:34:08,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:08,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:34:08,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:34:08,031 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 17:34:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:08,176 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 17:34:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:34:08,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 17:34:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:08,177 INFO L225 Difference]: With dead ends: 111 [2020-10-28 17:34:08,177 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 17:34:08,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:34:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 17:34:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 17:34:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 17:34:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 17:34:08,192 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 17:34:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:08,192 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 17:34:08,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:34:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 17:34:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 17:34:08,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:08,195 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 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] [2020-10-28 17:34:08,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:34:08,196 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -938034363, now seen corresponding path program 22 times [2020-10-28 17:34:08,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:08,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728843893] [2020-10-28 17:34:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:08,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:08,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:13,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:34:13,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:13,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:34:13,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:13,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:34:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 17:34:13,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:34:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:13,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:13,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:13,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:34:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:13,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:13,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:34:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:13,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:13,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:13,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:34:13,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:13,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:34:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 17:34:13,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:13,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:34:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:34:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:34:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:13,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:34:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 17:34:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:13,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:34:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2020-10-28 17:34:13,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728843893] [2020-10-28 17:34:13,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:13,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:34:13,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820548995] [2020-10-28 17:34:13,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:34:13,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:34:13,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:34:13,683 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 17:34:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:14,226 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-28 17:34:14,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:34:14,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 17:34:14,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:14,228 INFO L225 Difference]: With dead ends: 129 [2020-10-28 17:34:14,228 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 17:34:14,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:34:14,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 17:34:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 17:34:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 17:34:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 17:34:14,236 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 17:34:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:14,236 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 17:34:14,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:34:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 17:34:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:34:14,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:14,238 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 6, 6, 3, 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] [2020-10-28 17:34:14,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:34:14,238 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash -791420637, now seen corresponding path program 23 times [2020-10-28 17:34:14,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:14,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729861355] [2020-10-28 17:34:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:34:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:34:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:34:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:34:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:19,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 17:34:19,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729861355] [2020-10-28 17:34:19,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:19,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:34:19,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138770854] [2020-10-28 17:34:19,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:34:19,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:19,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:34:19,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:34:19,700 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 17:34:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:19,824 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-28 17:34:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:34:19,825 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 17:34:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:19,826 INFO L225 Difference]: With dead ends: 134 [2020-10-28 17:34:19,826 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:34:19,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:34:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:34:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 17:34:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:34:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 17:34:19,833 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-28 17:34:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:19,834 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 17:34:19,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:34:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 17:34:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 17:34:19,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:19,835 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 6, 6, 3, 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] [2020-10-28 17:34:19,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:34:19,835 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:19,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1891911675, now seen corresponding path program 24 times [2020-10-28 17:34:19,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:19,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319932680] [2020-10-28 17:34:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:34:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 17:34:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:34:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:34:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:34:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 17:34:25,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319932680] [2020-10-28 17:34:25,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:25,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:34:25,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699976439] [2020-10-28 17:34:25,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:34:25,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:34:25,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:34:25,320 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 17:34:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:25,472 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-28 17:34:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:34:25,473 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 17:34:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:25,474 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:34:25,474 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 17:34:25,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:34:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 17:34:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 17:34:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:34:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 17:34:25,482 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 17:34:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:25,482 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 17:34:25,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:34:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 17:34:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 17:34:25,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:25,483 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 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] [2020-10-28 17:34:25,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:34:25,484 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:25,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1431169405, now seen corresponding path program 25 times [2020-10-28 17:34:25,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:25,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478425041] [2020-10-28 17:34:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:30,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 17:34:30,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:30,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:30,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:30,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:30,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:30,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:30,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 17:34:30,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:30,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:34:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:34:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:34:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:30,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:31,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:31,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 17:34:31,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:34:31,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:31,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:34:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 17:34:31,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478425041] [2020-10-28 17:34:31,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:31,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:34:31,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175951444] [2020-10-28 17:34:31,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:34:31,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:34:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:34:31,046 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 17:34:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:31,619 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-28 17:34:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:34:31,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 17:34:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:31,621 INFO L225 Difference]: With dead ends: 139 [2020-10-28 17:34:31,621 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 17:34:31,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:34:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 17:34:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 17:34:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 17:34:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 17:34:31,628 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 17:34:31,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:31,628 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 17:34:31,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:34:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 17:34:31,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 17:34:31,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:31,629 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 7, 7, 3, 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] [2020-10-28 17:34:31,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:34:31,630 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:31,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1394510623, now seen corresponding path program 26 times [2020-10-28 17:34:31,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:31,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215001004] [2020-10-28 17:34:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:36,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 17:34:36,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:34:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:36,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:36,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:36,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:36,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:34:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:34:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:34:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 17:34:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:37,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:37,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:34:37,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:34:37,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:37,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:34:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:37,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 17:34:37,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215001004] [2020-10-28 17:34:37,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:37,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:34:37,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822990364] [2020-10-28 17:34:37,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:34:37,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:37,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:34:37,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:34:37,221 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 17:34:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:37,853 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-28 17:34:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:34:37,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 17:34:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:37,855 INFO L225 Difference]: With dead ends: 143 [2020-10-28 17:34:37,856 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 17:34:37,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:34:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 17:34:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 17:34:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:34:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 17:34:37,863 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 17:34:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:37,863 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 17:34:37,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:34:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 17:34:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 17:34:37,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:37,865 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 7, 7, 3, 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] [2020-10-28 17:34:37,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:34:37,865 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:37,865 INFO L82 PathProgramCache]: Analyzing trace with hash -544680769, now seen corresponding path program 27 times [2020-10-28 17:34:37,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:37,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140079865] [2020-10-28 17:34:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:34:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:43,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:34:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:34:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:34:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 17:34:43,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140079865] [2020-10-28 17:34:43,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:43,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:34:43,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46170493] [2020-10-28 17:34:43,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:34:43,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:43,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:34:43,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:34:43,475 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 17:34:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:43,639 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-28 17:34:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:34:43,639 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 17:34:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:43,640 INFO L225 Difference]: With dead ends: 148 [2020-10-28 17:34:43,640 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 17:34:43,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:34:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 17:34:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 17:34:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 17:34:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 17:34:43,648 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 17:34:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:43,648 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 17:34:43,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:34:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 17:34:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 17:34:43,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:43,649 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 7, 7, 3, 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] [2020-10-28 17:34:43,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 17:34:43,650 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash 628795297, now seen corresponding path program 28 times [2020-10-28 17:34:43,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:43,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972067339] [2020-10-28 17:34:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:34:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:34:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:48,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:48,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:34:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:49,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:34:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 17:34:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:49,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 17:34:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 17:34:49,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972067339] [2020-10-28 17:34:49,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:49,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:34:49,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845375628] [2020-10-28 17:34:49,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:34:49,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:49,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:34:49,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:34:49,350 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 17:34:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:49,570 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-28 17:34:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:34:49,571 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 17:34:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:49,572 INFO L225 Difference]: With dead ends: 150 [2020-10-28 17:34:49,572 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 17:34:49,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:34:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 17:34:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 17:34:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 17:34:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 17:34:49,587 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 17:34:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:49,587 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 17:34:49,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:34:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 17:34:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:34:49,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:49,589 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 7, 7, 3, 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] [2020-10-28 17:34:49,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 17:34:49,589 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1237104125, now seen corresponding path program 29 times [2020-10-28 17:34:49,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:49,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809286567] [2020-10-28 17:34:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:34:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-28 17:34:54,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:54,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:34:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 17:34:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:34:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:54,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:54,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:54,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:34:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:55,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 17:34:55,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:55,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:55,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 17:34:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:55,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:34:55,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 17:34:55,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:55,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 17:34:55,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809286567] [2020-10-28 17:34:55,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:55,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:34:55,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026155106] [2020-10-28 17:34:55,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:34:55,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:34:55,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:34:55,246 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 17:34:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:55,445 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-28 17:34:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:34:55,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 17:34:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:55,448 INFO L225 Difference]: With dead ends: 133 [2020-10-28 17:34:55,448 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:34:55,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:34:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:34:55,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 17:34:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 17:34:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 17:34:55,463 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 17:34:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:55,463 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 17:34:55,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:34:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 17:34:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 17:34:55,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:55,464 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 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] [2020-10-28 17:34:55,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 17:34:55,465 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:55,467 INFO L82 PathProgramCache]: Analyzing trace with hash -7720703, now seen corresponding path program 30 times [2020-10-28 17:34:55,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:55,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072161807] [2020-10-28 17:34:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:35:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:00,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:00,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:00,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:00,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:35:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:35:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:35:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:35:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:35:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:35:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 17:35:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:00,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:01,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 17:35:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-28 17:35:01,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072161807] [2020-10-28 17:35:01,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:01,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:35:01,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454182822] [2020-10-28 17:35:01,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:35:01,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:01,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:35:01,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:35:01,105 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 17:35:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:01,781 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-28 17:35:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:35:01,781 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 17:35:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:01,783 INFO L225 Difference]: With dead ends: 155 [2020-10-28 17:35:01,783 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 17:35:01,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:35:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 17:35:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 17:35:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 17:35:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 17:35:01,790 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 17:35:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:01,790 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 17:35:01,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:35:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 17:35:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 17:35:01,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:01,791 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 8, 8, 3, 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] [2020-10-28 17:35:01,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 17:35:01,791 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1686415393, now seen corresponding path program 31 times [2020-10-28 17:35:01,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:01,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506930035] [2020-10-28 17:35:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:01,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:35:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 17:35:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:35:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:06,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:06,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:35:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:07,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:35:07,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:35:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:35:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:35:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:35:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:07,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2020-10-28 17:35:07,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506930035] [2020-10-28 17:35:07,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:07,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:35:07,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082249872] [2020-10-28 17:35:07,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:35:07,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:07,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:35:07,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:35:07,603 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 17:35:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:08,385 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-10-28 17:35:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:35:08,385 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-10-28 17:35:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:08,386 INFO L225 Difference]: With dead ends: 159 [2020-10-28 17:35:08,386 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 17:35:08,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:35:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 17:35:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 17:35:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 17:35:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 17:35:08,395 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-28 17:35:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:08,396 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 17:35:08,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:35:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 17:35:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 17:35:08,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:08,397 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 13, 13, 8, 8, 3, 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] [2020-10-28 17:35:08,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 17:35:08,398 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:08,398 INFO L82 PathProgramCache]: Analyzing trace with hash -180412355, now seen corresponding path program 32 times [2020-10-28 17:35:08,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:08,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900549812] [2020-10-28 17:35:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:13,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:35:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:13,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:35:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:13,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:35:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 17:35:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:14,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:14,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:14,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 17:35:14,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900549812] [2020-10-28 17:35:14,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:14,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:35:14,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907345293] [2020-10-28 17:35:14,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:35:14,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:14,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:35:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:35:14,195 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 17:35:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:14,401 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-10-28 17:35:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:35:14,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-10-28 17:35:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:14,403 INFO L225 Difference]: With dead ends: 164 [2020-10-28 17:35:14,403 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 17:35:14,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:35:14,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 17:35:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 17:35:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 17:35:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 17:35:14,409 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 166 [2020-10-28 17:35:14,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:14,409 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 17:35:14,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:35:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 17:35:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 17:35:14,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:14,410 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 8, 8, 3, 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] [2020-10-28 17:35:14,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 17:35:14,410 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1435156127, now seen corresponding path program 33 times [2020-10-28 17:35:14,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:14,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473146761] [2020-10-28 17:35:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:35:19,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:35:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:35:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:19,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 17:35:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 17:35:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:20,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2390 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 17:35:20,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473146761] [2020-10-28 17:35:20,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:20,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:35:20,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170583833] [2020-10-28 17:35:20,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:35:20,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:35:20,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:35:20,137 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 17:35:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:20,369 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-28 17:35:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:35:20,369 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 168 [2020-10-28 17:35:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:20,370 INFO L225 Difference]: With dead ends: 166 [2020-10-28 17:35:20,371 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 17:35:20,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:35:20,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 17:35:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 17:35:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 17:35:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 17:35:20,379 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 168 [2020-10-28 17:35:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:20,380 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 17:35:20,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:35:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 17:35:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 17:35:20,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:20,381 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 8, 8, 3, 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] [2020-10-28 17:35:20,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 17:35:20,381 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:20,382 INFO L82 PathProgramCache]: Analyzing trace with hash -781693823, now seen corresponding path program 34 times [2020-10-28 17:35:20,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:20,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749802282] [2020-10-28 17:35:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:25,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 17:35:25,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 17:35:25,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:25,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:35:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 17:35:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:35:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:25,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:35:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:25,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:35:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:25,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 17:35:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 17:35:26,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749802282] [2020-10-28 17:35:26,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:26,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:35:26,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125005930] [2020-10-28 17:35:26,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:35:26,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:35:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:35:26,056 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 17:35:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:26,173 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-28 17:35:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:35:26,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 17:35:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:26,175 INFO L225 Difference]: With dead ends: 147 [2020-10-28 17:35:26,175 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 17:35:26,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:35:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 17:35:26,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 17:35:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 17:35:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 17:35:26,185 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 17:35:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:26,185 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 17:35:26,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:35:26,186 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 17:35:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 17:35:26,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:26,187 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 9, 9, 3, 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] [2020-10-28 17:35:26,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 17:35:26,188 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:26,188 INFO L82 PathProgramCache]: Analyzing trace with hash 433953791, now seen corresponding path program 35 times [2020-10-28 17:35:26,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:26,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716466668] [2020-10-28 17:35:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:31,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:31,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:35:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:35:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:31,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 17:35:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:31,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:35:31,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 17:35:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:31,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:35:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2020-10-28 17:35:31,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716466668] [2020-10-28 17:35:31,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:31,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:35:31,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994163528] [2020-10-28 17:35:31,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:35:31,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:35:31,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:31,914 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 17:35:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:32,694 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-28 17:35:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:32,694 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 17:35:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:32,696 INFO L225 Difference]: With dead ends: 171 [2020-10-28 17:35:32,696 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 17:35:32,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 17:35:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 17:35:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 17:35:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 17:35:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 17:35:32,704 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 17:35:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:32,704 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 17:35:32,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:35:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 17:35:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 17:35:32,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:32,706 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 9, 9, 3, 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] [2020-10-28 17:35:32,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 17:35:32,706 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:32,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:32,707 INFO L82 PathProgramCache]: Analyzing trace with hash 53767005, now seen corresponding path program 36 times [2020-10-28 17:35:32,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:32,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223824892] [2020-10-28 17:35:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:32,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:38,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:38,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:38,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:35:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:38,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:38,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 17:35:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:38,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 17:35:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:38,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2020-10-28 17:35:38,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223824892] [2020-10-28 17:35:38,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:38,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 17:35:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243700563] [2020-10-28 17:35:38,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 17:35:38,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:38,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 17:35:38,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:38,572 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-28 17:35:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:38,800 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-28 17:35:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:38,801 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 178 [2020-10-28 17:35:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:38,802 INFO L225 Difference]: With dead ends: 176 [2020-10-28 17:35:38,802 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 17:35:38,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 17:35:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 17:35:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 17:35:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-28 17:35:38,810 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 178 [2020-10-28 17:35:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:38,810 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-28 17:35:38,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 17:35:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-28 17:35:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 17:35:38,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:38,812 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 9, 9, 3, 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] [2020-10-28 17:35:38,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 17:35:38,812 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:38,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1999341247, now seen corresponding path program 37 times [2020-10-28 17:35:38,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:38,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99393536] [2020-10-28 17:35:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:43,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:35:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:35:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:44,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:35:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:44,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 17:35:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:44,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 17:35:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2671 trivial. 0 not checked. [2020-10-28 17:35:44,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99393536] [2020-10-28 17:35:44,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:35:44,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:35:44,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147458521] [2020-10-28 17:35:44,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:35:44,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:44,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:35:44,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:35:44,581 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 13 states. [2020-10-28 17:35:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:44,753 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-28 17:35:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:35:44,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 180 [2020-10-28 17:35:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:44,755 INFO L225 Difference]: With dead ends: 155 [2020-10-28 17:35:44,755 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 17:35:44,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:35:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 17:35:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-28 17:35:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 17:35:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-28 17:35:44,763 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-28 17:35:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:44,764 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-28 17:35:44,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:35:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-28 17:35:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 17:35:44,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:44,765 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 10, 10, 3, 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] [2020-10-28 17:35:44,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 17:35:44,765 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -62208323, now seen corresponding path program 38 times [2020-10-28 17:35:44,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:44,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110533969] [2020-10-28 17:35:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking...