/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/eca-rers2012/Problem11_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:42:46,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:42:46,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:42:46,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:42:46,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:42:46,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:42:46,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:42:46,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:42:46,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:42:46,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:42:46,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:42:46,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:42:46,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:42:46,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:42:46,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:42:46,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:42:46,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:42:46,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:42:46,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:42:46,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:42:46,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:42:46,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:42:46,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:42:46,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:42:46,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:42:46,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:42:46,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:42:46,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:42:46,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:42:46,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:42:46,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:42:46,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:42:46,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:42:46,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:42:46,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:42:46,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:42:46,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:42:46,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:42:46,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:42:46,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:42:46,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:42:46,831 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 [2020-10-29 06:42:46,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:42:46,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:42:46,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:42:46,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:42:46,863 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:42:46,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:42:46,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:42:46,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:42:46,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:42:46,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:42:46,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:42:46,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:42:46,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:42:46,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:42:46,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:42:46,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:42:46,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:42:46,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:42:46,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:42:46,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:42:46,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:42:46,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:42:46,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:42:46,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:42:46,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:42:46,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:42:46,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:42:46,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:42:46,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:42:46,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:42:47,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:42:47,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:42:47,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:42:47,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:42:47,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:42:47,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10.c [2020-10-29 06:42:47,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161b6692d/b1d2af49b7bd469983f2febb966852b2/FLAGfb5666f35 [2020-10-29 06:42:48,338 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:42:48,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label10.c [2020-10-29 06:42:48,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161b6692d/b1d2af49b7bd469983f2febb966852b2/FLAGfb5666f35 [2020-10-29 06:42:48,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161b6692d/b1d2af49b7bd469983f2febb966852b2 [2020-10-29 06:42:48,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:42:48,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:42:48,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:42:48,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:42:48,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:42:48,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:42:48" (1/1) ... [2020-10-29 06:42:48,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99320ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:48, skipping insertion in model container [2020-10-29 06:42:48,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:42:48" (1/1) ... [2020-10-29 06:42:48,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:42:48,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:42:49,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:42:49,282 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:42:49,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:42:49,535 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:42:49,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49 WrapperNode [2020-10-29 06:42:49,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:42:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:42:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:42:49,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:42:49,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (1/1) ... [2020-10-29 06:42:49,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:42:49,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:42:49,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:42:49,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:42:49,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (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 [2020-10-29 06:42:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:42:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:42:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:42:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:42:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:42:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:42:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:42:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:42:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:42:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:42:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:42:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:42:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:42:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:42:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:42:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:42:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:42:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:42:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:42:51,953 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:42:51,954 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:42:51,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:42:51 BoogieIcfgContainer [2020-10-29 06:42:51,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:42:51,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:42:51,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:42:51,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:42:51,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:42:48" (1/3) ... [2020-10-29 06:42:51,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383f1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:42:51, skipping insertion in model container [2020-10-29 06:42:51,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:49" (2/3) ... [2020-10-29 06:42:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383f1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:42:51, skipping insertion in model container [2020-10-29 06:42:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:42:51" (3/3) ... [2020-10-29 06:42:51,967 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label10.c [2020-10-29 06:42:51,980 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:42:51,986 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:42:52,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:42:52,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:42:52,034 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:42:52,034 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:42:52,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:42:52,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:42:52,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:42:52,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:42:52,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:42:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:42:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 06:42:52,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:52,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:42:52,069 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:52,076 INFO L82 PathProgramCache]: Analyzing trace with hash -15487626, now seen corresponding path program 1 times [2020-10-29 06:42:52,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:52,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755535755] [2020-10-29 06:42:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:52,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:52,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 06:42:52,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:52,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-29 06:42:52,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:52,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:42:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:42:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 06:42:52,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:42:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:42:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:42:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:42:53,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:53,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:42:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:42:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:42:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:42:53,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755535755] [2020-10-29 06:42:53,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:42:53,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:42:53,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279621791] [2020-10-29 06:42:53,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:42:53,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:42:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:42:53,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:42:53,119 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:42:53,325 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:42:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:42:56,662 INFO L93 Difference]: Finished difference Result 810 states and 1408 transitions. [2020-10-29 06:42:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:42:56,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 06:42:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:42:56,698 INFO L225 Difference]: With dead ends: 810 [2020-10-29 06:42:56,698 INFO L226 Difference]: Without dead ends: 434 [2020-10-29 06:42:56,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:42:56,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-29 06:42:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 425. [2020-10-29 06:42:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-29 06:42:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-29 06:42:56,826 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 29 [2020-10-29 06:42:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:42:56,827 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-29 06:42:56,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:42:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-29 06:42:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 06:42:56,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:56,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:42:56,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:42:56,835 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:56,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1827826683, now seen corresponding path program 1 times [2020-10-29 06:42:56,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:56,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414283104] [2020-10-29 06:42:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 06:42:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:42:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-29 06:42:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:58,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:42:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:42:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:42:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:42:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:42:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:58,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:42:58,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:42:58,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:58,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:42:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:42:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:42:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:58,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:58,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:42:58,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:58,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 06:42:58,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:58,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:42:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:42:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:42:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:42:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:42:58,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414283104] [2020-10-29 06:42:58,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:42:58,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:42:58,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118081177] [2020-10-29 06:42:58,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:42:58,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:42:58,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:42:58,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:42:58,743 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-29 06:43:04,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:04,325 INFO L93 Difference]: Finished difference Result 1268 states and 1866 transitions. [2020-10-29 06:43:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:43:04,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-29 06:43:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:04,335 INFO L225 Difference]: With dead ends: 1268 [2020-10-29 06:43:04,335 INFO L226 Difference]: Without dead ends: 849 [2020-10-29 06:43:04,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-10-29 06:43:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 817. [2020-10-29 06:43:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-10-29 06:43:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1127 transitions. [2020-10-29 06:43:04,440 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1127 transitions. Word has length 101 [2020-10-29 06:43:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:04,441 INFO L481 AbstractCegarLoop]: Abstraction has 817 states and 1127 transitions. [2020-10-29 06:43:04,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1127 transitions. [2020-10-29 06:43:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 06:43:04,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:04,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:04,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:43:04,455 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:04,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1562617657, now seen corresponding path program 1 times [2020-10-29 06:43:04,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:04,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855997199] [2020-10-29 06:43:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:06,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:06,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:43:06,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-10-29 06:43:06,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:06,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:43:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:43:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:43:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:06,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:43:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:06,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:43:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 06:43:06,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:06,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:43:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:43:06,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855997199] [2020-10-29 06:43:06,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:43:06,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:43:06,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157612967] [2020-10-29 06:43:06,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:06,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:06,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:06,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:06,616 INFO L87 Difference]: Start difference. First operand 817 states and 1127 transitions. Second operand 7 states. [2020-10-29 06:43:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:10,862 INFO L93 Difference]: Finished difference Result 1843 states and 2608 transitions. [2020-10-29 06:43:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:43:10,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-29 06:43:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:10,870 INFO L225 Difference]: With dead ends: 1843 [2020-10-29 06:43:10,870 INFO L226 Difference]: Without dead ends: 1032 [2020-10-29 06:43:10,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-10-29 06:43:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1009. [2020-10-29 06:43:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-29 06:43:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1269 transitions. [2020-10-29 06:43:10,918 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1269 transitions. Word has length 102 [2020-10-29 06:43:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:10,918 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1269 transitions. [2020-10-29 06:43:10,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1269 transitions. [2020-10-29 06:43:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 06:43:10,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:10,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:10,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:43:10,923 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:10,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:10,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1107118559, now seen corresponding path program 1 times [2020-10-29 06:43:10,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:10,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727979997] [2020-10-29 06:43:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:11,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:11,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:11,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 06:43:11,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-29 06:43:11,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:11,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:43:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:43:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:43:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:43:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:11,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:43:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:12,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:12,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:12,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 06:43:12,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:43:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:43:12,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727979997] [2020-10-29 06:43:12,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:12,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:43:12,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494228783] [2020-10-29 06:43:12,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:43:12,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:12,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:43:12,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:43:12,387 INFO L87 Difference]: Start difference. First operand 1009 states and 1269 transitions. Second operand 6 states. [2020-10-29 06:43:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:15,914 INFO L93 Difference]: Finished difference Result 2070 states and 2858 transitions. [2020-10-29 06:43:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:43:15,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-29 06:43:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:15,931 INFO L225 Difference]: With dead ends: 2070 [2020-10-29 06:43:15,931 INFO L226 Difference]: Without dead ends: 1445 [2020-10-29 06:43:15,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:43:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-10-29 06:43:16,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1414. [2020-10-29 06:43:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2020-10-29 06:43:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1785 transitions. [2020-10-29 06:43:16,011 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1785 transitions. Word has length 145 [2020-10-29 06:43:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:16,013 INFO L481 AbstractCegarLoop]: Abstraction has 1414 states and 1785 transitions. [2020-10-29 06:43:16,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:43:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1785 transitions. [2020-10-29 06:43:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 06:43:16,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:16,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:16,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:43:16,017 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1233461886, now seen corresponding path program 1 times [2020-10-29 06:43:16,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:16,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624360047] [2020-10-29 06:43:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:16,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:43:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-29 06:43:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:16,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:43:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 06:43:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:16,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:43:16,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:16,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:43:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 06:43:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:16,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:43:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:43:16,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624360047] [2020-10-29 06:43:16,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:16,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:43:16,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103317701] [2020-10-29 06:43:16,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:43:16,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:16,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:43:16,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:43:16,926 INFO L87 Difference]: Start difference. First operand 1414 states and 1785 transitions. Second operand 5 states. [2020-10-29 06:43:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:19,994 INFO L93 Difference]: Finished difference Result 3039 states and 4012 transitions. [2020-10-29 06:43:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:43:19,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-29 06:43:19,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:20,008 INFO L225 Difference]: With dead ends: 3039 [2020-10-29 06:43:20,012 INFO L226 Difference]: Without dead ends: 2009 [2020-10-29 06:43:20,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:43:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-10-29 06:43:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1800. [2020-10-29 06:43:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-29 06:43:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2335 transitions. [2020-10-29 06:43:20,098 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2335 transitions. Word has length 160 [2020-10-29 06:43:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:20,099 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 2335 transitions. [2020-10-29 06:43:20,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:43:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2335 transitions. [2020-10-29 06:43:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 06:43:20,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:20,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:20,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:43:20,105 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:20,106 INFO L82 PathProgramCache]: Analyzing trace with hash 688701862, now seen corresponding path program 1 times [2020-10-29 06:43:20,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:20,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186740795] [2020-10-29 06:43:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:20,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:21,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:21,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 06:43:21,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:43:21,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-29 06:43:21,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:21,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:43:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:43:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:22,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:22,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:43:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:22,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:22,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:22,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:22,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 06:43:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:22,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:43:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:43:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:22,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:43:22,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:43:22,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:22,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:43:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:22,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186740795] [2020-10-29 06:43:22,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:22,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:22,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353773009] [2020-10-29 06:43:22,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:22,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:22,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:22,736 INFO L87 Difference]: Start difference. First operand 1800 states and 2335 transitions. Second operand 7 states. [2020-10-29 06:43:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:26,571 INFO L93 Difference]: Finished difference Result 3805 states and 5048 transitions. [2020-10-29 06:43:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:43:26,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-29 06:43:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:26,585 INFO L225 Difference]: With dead ends: 3805 [2020-10-29 06:43:26,585 INFO L226 Difference]: Without dead ends: 2389 [2020-10-29 06:43:26,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-10-29 06:43:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2000. [2020-10-29 06:43:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2020-10-29 06:43:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2636 transitions. [2020-10-29 06:43:26,662 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2636 transitions. Word has length 217 [2020-10-29 06:43:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:26,663 INFO L481 AbstractCegarLoop]: Abstraction has 2000 states and 2636 transitions. [2020-10-29 06:43:26,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2636 transitions. [2020-10-29 06:43:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 06:43:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:26,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:26,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:43:26,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 609486574, now seen corresponding path program 1 times [2020-10-29 06:43:26,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:26,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274027256] [2020-10-29 06:43:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:29,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:29,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 06:43:29,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2985 [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 06:43:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:29,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:29,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:43:29,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:29,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:43:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 06:43:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:30,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:43:30,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:43:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:30,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:43:30,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 06:43:30,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:30,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:43:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:43:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 104 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:43:30,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274027256] [2020-10-29 06:43:30,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:30,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:43:30,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506317753] [2020-10-29 06:43:30,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:43:30,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:30,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:43:30,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:43:30,856 INFO L87 Difference]: Start difference. First operand 2000 states and 2636 transitions. Second operand 8 states. [2020-10-29 06:43:33,519 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-29 06:43:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:35,520 INFO L93 Difference]: Finished difference Result 4872 states and 6952 transitions. [2020-10-29 06:43:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:43:35,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-29 06:43:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:35,545 INFO L225 Difference]: With dead ends: 4872 [2020-10-29 06:43:35,545 INFO L226 Difference]: Without dead ends: 2861 [2020-10-29 06:43:35,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:43:35,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2020-10-29 06:43:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2789. [2020-10-29 06:43:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-29 06:43:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3622 transitions. [2020-10-29 06:43:35,660 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3622 transitions. Word has length 218 [2020-10-29 06:43:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:35,661 INFO L481 AbstractCegarLoop]: Abstraction has 2789 states and 3622 transitions. [2020-10-29 06:43:35,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:43:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3622 transitions. [2020-10-29 06:43:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 06:43:35,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:35,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:35,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:43:35,666 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2000268714, now seen corresponding path program 1 times [2020-10-29 06:43:35,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:35,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670443134] [2020-10-29 06:43:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 06:43:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:43:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-29 06:43:37,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:37,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:43:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:43:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:37,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:37,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:37,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:43:37,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:37,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:37,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:38,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:38,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 06:43:38,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:38,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:43:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:43:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:38,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:38,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:43:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 06:43:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:38,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:43:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:38,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670443134] [2020-10-29 06:43:38,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:38,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:38,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525380918] [2020-10-29 06:43:38,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:38,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:38,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:38,566 INFO L87 Difference]: Start difference. First operand 2789 states and 3622 transitions. Second operand 7 states. [2020-10-29 06:43:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:42,415 INFO L93 Difference]: Finished difference Result 6768 states and 8856 transitions. [2020-10-29 06:43:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:43:42,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-29 06:43:42,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:42,439 INFO L225 Difference]: With dead ends: 6768 [2020-10-29 06:43:42,439 INFO L226 Difference]: Without dead ends: 3985 [2020-10-29 06:43:42,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2020-10-29 06:43:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3947. [2020-10-29 06:43:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3947 states. [2020-10-29 06:43:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 5019 transitions. [2020-10-29 06:43:42,580 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 5019 transitions. Word has length 219 [2020-10-29 06:43:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:42,580 INFO L481 AbstractCegarLoop]: Abstraction has 3947 states and 5019 transitions. [2020-10-29 06:43:42,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 5019 transitions. [2020-10-29 06:43:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 06:43:42,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:42,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:42,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:43:42,587 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash -471762498, now seen corresponding path program 1 times [2020-10-29 06:43:42,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:42,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954942233] [2020-10-29 06:43:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:43,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:43,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 06:43:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-29 06:43:43,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:43,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:43:43,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 06:43:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:43,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:43,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:43,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:43,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:43:43,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:43,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:43,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:43,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:43,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:43:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:43,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:43,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:43:43,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 06:43:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:43,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:43:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 45 [2020-10-29 06:43:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 06:43:44,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954942233] [2020-10-29 06:43:44,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:44,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:43:44,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928958670] [2020-10-29 06:43:44,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:43:44,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:43:44,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:43:44,035 INFO L87 Difference]: Start difference. First operand 3947 states and 5019 transitions. Second operand 6 states. [2020-10-29 06:43:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:48,376 INFO L93 Difference]: Finished difference Result 8687 states and 11165 transitions. [2020-10-29 06:43:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:43:48,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2020-10-29 06:43:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:48,400 INFO L225 Difference]: With dead ends: 8687 [2020-10-29 06:43:48,401 INFO L226 Difference]: Without dead ends: 4746 [2020-10-29 06:43:48,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:43:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2020-10-29 06:43:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4153. [2020-10-29 06:43:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2020-10-29 06:43:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5383 transitions. [2020-10-29 06:43:48,533 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5383 transitions. Word has length 229 [2020-10-29 06:43:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:48,534 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5383 transitions. [2020-10-29 06:43:48,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:43:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5383 transitions. [2020-10-29 06:43:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 06:43:48,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:48,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:48,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:43:48,541 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1670707034, now seen corresponding path program 1 times [2020-10-29 06:43:48,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:48,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569178870] [2020-10-29 06:43:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:49,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 06:43:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-29 06:43:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:49,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:43:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:43:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:49,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:49,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:49,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:43:49,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:49,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:49,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:43:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:43:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:43:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:43:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:49,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:43:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:43:49,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:49,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:43:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:49,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569178870] [2020-10-29 06:43:49,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:49,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:49,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30027273] [2020-10-29 06:43:49,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:49,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:49,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:49,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:49,867 INFO L87 Difference]: Start difference. First operand 4153 states and 5383 transitions. Second operand 7 states. [2020-10-29 06:43:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:55,290 INFO L93 Difference]: Finished difference Result 10478 states and 13890 transitions. [2020-10-29 06:43:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:43:55,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-29 06:43:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:55,332 INFO L225 Difference]: With dead ends: 10478 [2020-10-29 06:43:55,332 INFO L226 Difference]: Without dead ends: 6331 [2020-10-29 06:43:55,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6331 states. [2020-10-29 06:43:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6331 to 5549. [2020-10-29 06:43:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5549 states. [2020-10-29 06:43:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 7056 transitions. [2020-10-29 06:43:55,521 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 7056 transitions. Word has length 249 [2020-10-29 06:43:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:55,522 INFO L481 AbstractCegarLoop]: Abstraction has 5549 states and 7056 transitions. [2020-10-29 06:43:55,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 7056 transitions. [2020-10-29 06:43:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 06:43:55,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:55,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:55,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:43:55,530 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:55,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1954054545, now seen corresponding path program 1 times [2020-10-29 06:43:55,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:55,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491363181] [2020-10-29 06:43:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:56,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:56,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 06:43:56,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-29 06:43:56,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:56,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-29 06:43:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 06:43:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:56,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:56,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:56,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:43:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:56,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:43:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:43:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:56,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:43:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 06:43:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 06:43:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:43:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 06:43:56,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491363181] [2020-10-29 06:43:56,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:56,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:43:56,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873512685] [2020-10-29 06:43:56,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:43:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:56,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:43:56,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:43:56,771 INFO L87 Difference]: Start difference. First operand 5549 states and 7056 transitions. Second operand 5 states. [2020-10-29 06:43:58,027 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:43:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:59,471 INFO L93 Difference]: Finished difference Result 11120 states and 14171 transitions. [2020-10-29 06:43:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:43:59,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-29 06:43:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:59,499 INFO L225 Difference]: With dead ends: 11120 [2020-10-29 06:43:59,499 INFO L226 Difference]: Without dead ends: 5559 [2020-10-29 06:43:59,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:43:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2020-10-29 06:43:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5547. [2020-10-29 06:43:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2020-10-29 06:43:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 7036 transitions. [2020-10-29 06:43:59,666 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 7036 transitions. Word has length 251 [2020-10-29 06:43:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:59,666 INFO L481 AbstractCegarLoop]: Abstraction has 5547 states and 7036 transitions. [2020-10-29 06:43:59,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:43:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 7036 transitions. [2020-10-29 06:43:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 06:43:59,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:59,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:59,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:43:59,674 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1085529528, now seen corresponding path program 1 times [2020-10-29 06:43:59,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:59,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547534055] [2020-10-29 06:43:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:00,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 06:44:00,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-29 06:44:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:00,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:44:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:00,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:00,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:44:00,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:00,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:00,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:00,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:44:00,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 06:44:00,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:00,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:44:00,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:44:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:00,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:00,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:00,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:00,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 06:44:00,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:00,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:44:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:44:01,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547534055] [2020-10-29 06:44:01,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:01,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:01,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866108173] [2020-10-29 06:44:01,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:01,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:01,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:01,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:01,138 INFO L87 Difference]: Start difference. First operand 5547 states and 7036 transitions. Second operand 7 states. [2020-10-29 06:44:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:05,240 INFO L93 Difference]: Finished difference Result 11896 states and 15039 transitions. [2020-10-29 06:44:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:44:05,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-29 06:44:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:05,264 INFO L225 Difference]: With dead ends: 11896 [2020-10-29 06:44:05,264 INFO L226 Difference]: Without dead ends: 6355 [2020-10-29 06:44:05,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6355 states. [2020-10-29 06:44:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6322. [2020-10-29 06:44:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6322 states. [2020-10-29 06:44:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 7899 transitions. [2020-10-29 06:44:05,428 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 7899 transitions. Word has length 270 [2020-10-29 06:44:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:05,429 INFO L481 AbstractCegarLoop]: Abstraction has 6322 states and 7899 transitions. [2020-10-29 06:44:05,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 7899 transitions. [2020-10-29 06:44:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-29 06:44:05,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:05,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:05,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:44:05,438 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:05,438 INFO L82 PathProgramCache]: Analyzing trace with hash -175035042, now seen corresponding path program 1 times [2020-10-29 06:44:05,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:05,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585637762] [2020-10-29 06:44:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:06,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:06,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-29 06:44:06,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 06:44:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:06,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:06,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:06,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:06,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:06,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:44:06,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:44:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:06,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:44:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:06,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:06,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:44:06,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:44:06,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:06,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 06:44:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-29 06:44:06,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585637762] [2020-10-29 06:44:06,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:06,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:44:06,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857009467] [2020-10-29 06:44:06,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:44:06,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:06,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:44:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:44:06,608 INFO L87 Difference]: Start difference. First operand 6322 states and 7899 transitions. Second operand 5 states. [2020-10-29 06:44:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:09,865 INFO L93 Difference]: Finished difference Result 12651 states and 15817 transitions. [2020-10-29 06:44:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:44:09,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-29 06:44:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:09,888 INFO L225 Difference]: With dead ends: 12651 [2020-10-29 06:44:09,888 INFO L226 Difference]: Without dead ends: 6335 [2020-10-29 06:44:09,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:44:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2020-10-29 06:44:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6317. [2020-10-29 06:44:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6317 states. [2020-10-29 06:44:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 7624 transitions. [2020-10-29 06:44:10,051 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 7624 transitions. Word has length 276 [2020-10-29 06:44:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:10,052 INFO L481 AbstractCegarLoop]: Abstraction has 6317 states and 7624 transitions. [2020-10-29 06:44:10,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:44:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 7624 transitions. [2020-10-29 06:44:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 06:44:10,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:10,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:10,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:44:10,065 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:10,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1689459217, now seen corresponding path program 1 times [2020-10-29 06:44:10,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:10,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332883794] [2020-10-29 06:44:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:12,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:12,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-29 06:44:12,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2565 [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:44:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:12,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:12,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:12,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:44:12,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:12,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:12,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:44:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:13,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:13,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:44:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:44:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:13,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:13,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:44:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:44:13,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:13,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:44:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:44:13,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332883794] [2020-10-29 06:44:13,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:13,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:13,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108129298] [2020-10-29 06:44:13,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:13,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:13,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:13,449 INFO L87 Difference]: Start difference. First operand 6317 states and 7624 transitions. Second operand 7 states. [2020-10-29 06:44:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:18,136 INFO L93 Difference]: Finished difference Result 14210 states and 17226 transitions. [2020-10-29 06:44:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:44:18,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-29 06:44:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:18,166 INFO L225 Difference]: With dead ends: 14210 [2020-10-29 06:44:18,166 INFO L226 Difference]: Without dead ends: 7899 [2020-10-29 06:44:18,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2020-10-29 06:44:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7475. [2020-10-29 06:44:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7475 states. [2020-10-29 06:44:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7475 states to 7475 states and 8897 transitions. [2020-10-29 06:44:18,353 INFO L78 Accepts]: Start accepts. Automaton has 7475 states and 8897 transitions. Word has length 318 [2020-10-29 06:44:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:18,354 INFO L481 AbstractCegarLoop]: Abstraction has 7475 states and 8897 transitions. [2020-10-29 06:44:18,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7475 states and 8897 transitions. [2020-10-29 06:44:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 06:44:18,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:18,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:18,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:44:18,367 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1117487279, now seen corresponding path program 1 times [2020-10-29 06:44:18,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:18,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555294183] [2020-10-29 06:44:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-29 06:44:19,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-29 06:44:19,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:44:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:19,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:44:19,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:19,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:19,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:19,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:44:19,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:19,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:44:19,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:19,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:44:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:20,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:20,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:44:20,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:44:20,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:20,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:44:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:44:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:20,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:20,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:44:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:20,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:44:20,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555294183] [2020-10-29 06:44:20,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:20,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:20,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791954472] [2020-10-29 06:44:20,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:20,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:20,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:20,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:20,493 INFO L87 Difference]: Start difference. First operand 7475 states and 8897 transitions. Second operand 7 states. [2020-10-29 06:44:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:24,835 INFO L93 Difference]: Finished difference Result 15772 states and 18735 transitions. [2020-10-29 06:44:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:44:24,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-29 06:44:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:24,868 INFO L225 Difference]: With dead ends: 15772 [2020-10-29 06:44:24,868 INFO L226 Difference]: Without dead ends: 8303 [2020-10-29 06:44:24,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8303 states. [2020-10-29 06:44:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8303 to 7885. [2020-10-29 06:44:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7885 states. [2020-10-29 06:44:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7885 states to 7885 states and 9131 transitions. [2020-10-29 06:44:25,052 INFO L78 Accepts]: Start accepts. Automaton has 7885 states and 9131 transitions. Word has length 323 [2020-10-29 06:44:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:25,053 INFO L481 AbstractCegarLoop]: Abstraction has 7885 states and 9131 transitions. [2020-10-29 06:44:25,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7885 states and 9131 transitions. [2020-10-29 06:44:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-29 06:44:25,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:25,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:25,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:44:25,065 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:25,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:25,066 INFO L82 PathProgramCache]: Analyzing trace with hash 405299316, now seen corresponding path program 1 times [2020-10-29 06:44:25,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:25,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405256081] [2020-10-29 06:44:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-29 06:44:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-29 06:44:26,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:26,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:44:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:26,856 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:44:26,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:26,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:26,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:26,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:26,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:44:26,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:44:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:27,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:27,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:44:27,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 06:44:27,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:27,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:44:27,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:44:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:27,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:27,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:44:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:27,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:44:27,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405256081] [2020-10-29 06:44:27,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:27,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:44:27,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171968904] [2020-10-29 06:44:27,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:44:27,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:27,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:44:27,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:44:27,470 INFO L87 Difference]: Start difference. First operand 7885 states and 9131 transitions. Second operand 8 states. [2020-10-29 06:44:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:33,185 INFO L93 Difference]: Finished difference Result 17732 states and 20855 transitions. [2020-10-29 06:44:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:44:33,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 324 [2020-10-29 06:44:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:33,220 INFO L225 Difference]: With dead ends: 17732 [2020-10-29 06:44:33,220 INFO L226 Difference]: Without dead ends: 9853 [2020-10-29 06:44:33,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:44:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9853 states. [2020-10-29 06:44:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 9054. [2020-10-29 06:44:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9054 states. [2020-10-29 06:44:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 10479 transitions. [2020-10-29 06:44:33,441 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 10479 transitions. Word has length 324 [2020-10-29 06:44:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:33,442 INFO L481 AbstractCegarLoop]: Abstraction has 9054 states and 10479 transitions. [2020-10-29 06:44:33,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:44:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 10479 transitions. [2020-10-29 06:44:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 06:44:33,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:33,456 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:33,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:44:33,457 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash 373847551, now seen corresponding path program 1 times [2020-10-29 06:44:33,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:33,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222943164] [2020-10-29 06:44:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:33,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:33,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-29 06:44:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-29 06:44:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:33,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-29 06:44:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:34,181 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:44:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:44:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:34,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:44:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:44:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:34,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:44:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:34,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:44:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-29 06:44:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:34,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:34,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:34,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:44:34,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:34,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 06:44:34,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222943164] [2020-10-29 06:44:34,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:34,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:34,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373772678] [2020-10-29 06:44:34,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:34,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:34,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:34,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:34,725 INFO L87 Difference]: Start difference. First operand 9054 states and 10479 transitions. Second operand 7 states. [2020-10-29 06:44:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:38,665 INFO L93 Difference]: Finished difference Result 18932 states and 21905 transitions. [2020-10-29 06:44:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:44:38,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-29 06:44:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:38,692 INFO L225 Difference]: With dead ends: 18932 [2020-10-29 06:44:38,692 INFO L226 Difference]: Without dead ends: 9884 [2020-10-29 06:44:38,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2020-10-29 06:44:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 9434. [2020-10-29 06:44:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9434 states. [2020-10-29 06:44:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9434 states to 9434 states and 10879 transitions. [2020-10-29 06:44:38,891 INFO L78 Accepts]: Start accepts. Automaton has 9434 states and 10879 transitions. Word has length 328 [2020-10-29 06:44:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:38,892 INFO L481 AbstractCegarLoop]: Abstraction has 9434 states and 10879 transitions. [2020-10-29 06:44:38,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 9434 states and 10879 transitions. [2020-10-29 06:44:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 06:44:38,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:38,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:38,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:44:38,904 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1151400753, now seen corresponding path program 1 times [2020-10-29 06:44:38,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:38,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768292753] [2020-10-29 06:44:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:39,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 06:44:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:39,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:44:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:39,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:39,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:44:39,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:44:39,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:39,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 06:44:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 06:44:40,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768292753] [2020-10-29 06:44:40,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:40,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:44:40,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036656532] [2020-10-29 06:44:40,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:44:40,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:40,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:44:40,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:44:40,114 INFO L87 Difference]: Start difference. First operand 9434 states and 10879 transitions. Second operand 5 states. [2020-10-29 06:44:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:43,232 INFO L93 Difference]: Finished difference Result 20632 states and 24080 transitions. [2020-10-29 06:44:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:44:43,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-29 06:44:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:43,260 INFO L225 Difference]: With dead ends: 20632 [2020-10-29 06:44:43,260 INFO L226 Difference]: Without dead ends: 11204 [2020-10-29 06:44:43,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:44:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2020-10-29 06:44:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 10789. [2020-10-29 06:44:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10789 states. [2020-10-29 06:44:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12560 transitions. [2020-10-29 06:44:43,479 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12560 transitions. Word has length 335 [2020-10-29 06:44:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:43,480 INFO L481 AbstractCegarLoop]: Abstraction has 10789 states and 12560 transitions. [2020-10-29 06:44:43,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:44:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12560 transitions. [2020-10-29 06:44:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 06:44:43,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:43,491 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:43,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:44:43,492 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:43,492 INFO L82 PathProgramCache]: Analyzing trace with hash 958049699, now seen corresponding path program 1 times [2020-10-29 06:44:43,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:43,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824189758] [2020-10-29 06:44:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:44:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:44,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:44,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:44,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:44:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:44,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:44,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:44:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:44:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:44,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:44:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:45,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:45,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:45,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:44:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 06:44:45,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:45,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:44:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:44:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:44:45,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824189758] [2020-10-29 06:44:45,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:45,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:45,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629031115] [2020-10-29 06:44:45,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:45,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:45,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:45,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:45,590 INFO L87 Difference]: Start difference. First operand 10789 states and 12560 transitions. Second operand 7 states. [2020-10-29 06:44:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:49,906 INFO L93 Difference]: Finished difference Result 23840 states and 28326 transitions. [2020-10-29 06:44:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:44:49,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-29 06:44:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:49,938 INFO L225 Difference]: With dead ends: 23840 [2020-10-29 06:44:49,938 INFO L226 Difference]: Without dead ends: 10920 [2020-10-29 06:44:49,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2020-10-29 06:44:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 10748. [2020-10-29 06:44:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10748 states. [2020-10-29 06:44:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10748 states to 10748 states and 12219 transitions. [2020-10-29 06:44:50,206 INFO L78 Accepts]: Start accepts. Automaton has 10748 states and 12219 transitions. Word has length 350 [2020-10-29 06:44:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:50,206 INFO L481 AbstractCegarLoop]: Abstraction has 10748 states and 12219 transitions. [2020-10-29 06:44:50,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 10748 states and 12219 transitions. [2020-10-29 06:44:50,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 06:44:50,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:50,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:50,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:44:50,217 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:50,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:50,218 INFO L82 PathProgramCache]: Analyzing trace with hash 494122689, now seen corresponding path program 1 times [2020-10-29 06:44:50,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:50,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201422310] [2020-10-29 06:44:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-29 06:44:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:51,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:44:51,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:44:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:44:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:51,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:44:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 06:44:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 06:44:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:44:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201422310] [2020-10-29 06:44:51,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:51,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:51,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24833396] [2020-10-29 06:44:51,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:51,720 INFO L87 Difference]: Start difference. First operand 10748 states and 12219 transitions. Second operand 7 states. [2020-10-29 06:44:53,926 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 06:44:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:55,281 INFO L93 Difference]: Finished difference Result 22874 states and 25989 transitions. [2020-10-29 06:44:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:44:55,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-29 06:44:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:55,312 INFO L225 Difference]: With dead ends: 22874 [2020-10-29 06:44:55,313 INFO L226 Difference]: Without dead ends: 12132 [2020-10-29 06:44:55,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12132 states. [2020-10-29 06:44:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12132 to 11696. [2020-10-29 06:44:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11696 states. [2020-10-29 06:44:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 13277 transitions. [2020-10-29 06:44:55,570 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 13277 transitions. Word has length 357 [2020-10-29 06:44:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:55,570 INFO L481 AbstractCegarLoop]: Abstraction has 11696 states and 13277 transitions. [2020-10-29 06:44:55,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 13277 transitions. [2020-10-29 06:44:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-29 06:44:55,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:55,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:55,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:44:55,584 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1406474842, now seen corresponding path program 1 times [2020-10-29 06:44:55,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:55,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888494508] [2020-10-29 06:44:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:58,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3269 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:44:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 378 [2020-10-29 06:44:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:44:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:59,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:59,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:44:59,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 06:44:59,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:59,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:44:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:44:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:44:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-29 06:44:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:00,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:45:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 222 proven. 137 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:45:00,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888494508] [2020-10-29 06:45:00,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:00,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 06:45:00,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540574116] [2020-10-29 06:45:00,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 06:45:00,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:00,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 06:45:00,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:45:00,948 INFO L87 Difference]: Start difference. First operand 11696 states and 13277 transitions. Second operand 13 states. [2020-10-29 06:45:01,174 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-29 06:45:02,587 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-29 06:45:05,697 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-29 06:45:06,770 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-29 06:45:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:08,717 INFO L93 Difference]: Finished difference Result 24023 states and 27274 transitions. [2020-10-29 06:45:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 06:45:08,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 387 [2020-10-29 06:45:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:08,746 INFO L225 Difference]: With dead ends: 24023 [2020-10-29 06:45:08,746 INFO L226 Difference]: Without dead ends: 12521 [2020-10-29 06:45:08,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-29 06:45:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2020-10-29 06:45:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 11890. [2020-10-29 06:45:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11890 states. [2020-10-29 06:45:09,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11890 states to 11890 states and 13475 transitions. [2020-10-29 06:45:09,005 INFO L78 Accepts]: Start accepts. Automaton has 11890 states and 13475 transitions. Word has length 387 [2020-10-29 06:45:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:09,005 INFO L481 AbstractCegarLoop]: Abstraction has 11890 states and 13475 transitions. [2020-10-29 06:45:09,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 06:45:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 11890 states and 13475 transitions. [2020-10-29 06:45:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-29 06:45:09,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:09,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:45:09,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:45:09,020 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2100408662, now seen corresponding path program 1 times [2020-10-29 06:45:09,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:09,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337172773] [2020-10-29 06:45:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:11,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2661 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-29 06:45:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:11,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:11,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:45:11,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:11,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:12,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:45:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:45:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:12,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:45:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:45:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:45:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 235 proven. 138 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:45:12,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337172773] [2020-10-29 06:45:12,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:12,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:45:12,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011747985] [2020-10-29 06:45:12,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:45:12,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:12,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:45:12,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:45:12,700 INFO L87 Difference]: Start difference. First operand 11890 states and 13475 transitions. Second operand 9 states. [2020-10-29 06:45:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:20,245 INFO L93 Difference]: Finished difference Result 31822 states and 36620 transitions. [2020-10-29 06:45:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 06:45:20,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 392 [2020-10-29 06:45:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:20,300 INFO L225 Difference]: With dead ends: 31822 [2020-10-29 06:45:20,301 INFO L226 Difference]: Without dead ends: 20318 [2020-10-29 06:45:20,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-29 06:45:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20318 states. [2020-10-29 06:45:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20318 to 13237. [2020-10-29 06:45:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13237 states. [2020-10-29 06:45:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13237 states to 13237 states and 14977 transitions. [2020-10-29 06:45:20,624 INFO L78 Accepts]: Start accepts. Automaton has 13237 states and 14977 transitions. Word has length 392 [2020-10-29 06:45:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:20,625 INFO L481 AbstractCegarLoop]: Abstraction has 13237 states and 14977 transitions. [2020-10-29 06:45:20,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:45:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 13237 states and 14977 transitions. [2020-10-29 06:45:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 06:45:20,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:20,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:20,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:45:20,638 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash 506696977, now seen corresponding path program 1 times [2020-10-29 06:45:20,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:20,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603908771] [2020-10-29 06:45:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:20,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:45:25,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:25,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:25,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:45:25,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:25,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:45:25,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:25,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:45:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:45:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:45:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:26,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 06:45:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:45:26,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603908771] [2020-10-29 06:45:26,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:26,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:45:26,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33528507] [2020-10-29 06:45:26,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:45:26,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:26,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:45:26,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:45:26,656 INFO L87 Difference]: Start difference. First operand 13237 states and 14977 transitions. Second operand 7 states. [2020-10-29 06:45:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:31,093 INFO L93 Difference]: Finished difference Result 29457 states and 34127 transitions. [2020-10-29 06:45:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:45:31,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-29 06:45:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:31,143 INFO L225 Difference]: With dead ends: 29457 [2020-10-29 06:45:31,144 INFO L226 Difference]: Without dead ends: 16604 [2020-10-29 06:45:31,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:45:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16604 states. [2020-10-29 06:45:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16604 to 15919. [2020-10-29 06:45:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15919 states. [2020-10-29 06:45:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15919 states to 15919 states and 18031 transitions. [2020-10-29 06:45:31,546 INFO L78 Accepts]: Start accepts. Automaton has 15919 states and 18031 transitions. Word has length 393 [2020-10-29 06:45:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:31,547 INFO L481 AbstractCegarLoop]: Abstraction has 15919 states and 18031 transitions. [2020-10-29 06:45:31,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:45:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 15919 states and 18031 transitions. [2020-10-29 06:45:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-29 06:45:31,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:31,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:31,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:45:31,559 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1420582354, now seen corresponding path program 1 times [2020-10-29 06:45:31,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:31,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521656029] [2020-10-29 06:45:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:34,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:34,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-29 06:45:34,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:45:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2993 [2020-10-29 06:45:34,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:34,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:45:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:45:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 06:45:34,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:34,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:34,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:34,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:45:34,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 06:45:34,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:34,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:34,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:45:34,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:45:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:35,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:35,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 06:45:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-29 06:45:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:45:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 258 proven. 43 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:45:35,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521656029] [2020-10-29 06:45:35,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:35,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:45:35,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485897579] [2020-10-29 06:45:35,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:45:35,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:35,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:45:35,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:45:35,726 INFO L87 Difference]: Start difference. First operand 15919 states and 18031 transitions. Second operand 8 states. [2020-10-29 06:45:35,882 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:45:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:41,630 INFO L93 Difference]: Finished difference Result 35583 states and 40590 transitions. [2020-10-29 06:45:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:45:41,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 414 [2020-10-29 06:45:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:41,686 INFO L225 Difference]: With dead ends: 35583 [2020-10-29 06:45:41,687 INFO L226 Difference]: Without dead ends: 20050 [2020-10-29 06:45:41,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:45:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20050 states. [2020-10-29 06:45:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20050 to 19366. [2020-10-29 06:45:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19366 states. [2020-10-29 06:45:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19366 states to 19366 states and 21825 transitions. [2020-10-29 06:45:42,086 INFO L78 Accepts]: Start accepts. Automaton has 19366 states and 21825 transitions. Word has length 414 [2020-10-29 06:45:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:42,086 INFO L481 AbstractCegarLoop]: Abstraction has 19366 states and 21825 transitions. [2020-10-29 06:45:42,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:45:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 19366 states and 21825 transitions. [2020-10-29 06:45:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-29 06:45:42,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:42,099 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:42,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:45:42,099 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:42,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1770502699, now seen corresponding path program 1 times [2020-10-29 06:45:42,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:42,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026438578] [2020-10-29 06:45:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:42,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:47,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:47,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-29 06:45:47,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 06:45:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 06:45:47,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:47,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:45:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-29 06:45:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:47,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:47,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:47,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:45:47,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:45:47,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:47,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 06:45:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:47,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:45:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:47,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:45:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 06:45:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:47,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 06:45:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-29 06:45:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:48,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:48,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 06:45:48,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 06:45:48,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:48,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:45:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 76 proven. 355 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 06:45:49,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026438578] [2020-10-29 06:45:49,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:49,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:45:49,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878684062] [2020-10-29 06:45:49,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:45:49,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:45:49,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:45:49,267 INFO L87 Difference]: Start difference. First operand 19366 states and 21825 transitions. Second operand 11 states. [2020-10-29 06:45:49,488 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-10-29 06:45:50,865 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-29 06:45:52,534 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-29 06:45:52,761 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:45:53,731 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-29 06:45:54,919 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-29 06:45:55,222 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-29 06:45:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:55,594 INFO L93 Difference]: Finished difference Result 42376 states and 48588 transitions. [2020-10-29 06:45:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 06:45:55,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 437 [2020-10-29 06:45:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:55,665 INFO L225 Difference]: With dead ends: 42376 [2020-10-29 06:45:55,665 INFO L226 Difference]: Without dead ends: 22366 [2020-10-29 06:45:55,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-29 06:45:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22366 states. [2020-10-29 06:45:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22366 to 22067. [2020-10-29 06:45:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22067 states. [2020-10-29 06:45:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22067 states to 22067 states and 24844 transitions. [2020-10-29 06:45:56,301 INFO L78 Accepts]: Start accepts. Automaton has 22067 states and 24844 transitions. Word has length 437 [2020-10-29 06:45:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:56,301 INFO L481 AbstractCegarLoop]: Abstraction has 22067 states and 24844 transitions. [2020-10-29 06:45:56,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:45:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 22067 states and 24844 transitions. [2020-10-29 06:45:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-29 06:45:56,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:56,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:56,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 06:45:56,317 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:56,318 INFO L82 PathProgramCache]: Analyzing trace with hash -162318672, now seen corresponding path program 1 times [2020-10-29 06:45:56,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:56,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733294817] [2020-10-29 06:45:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:45:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:57,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:57,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:45:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:45:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:58,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:45:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:58,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:45:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:58,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:58,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-29 06:45:58,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733294817] [2020-10-29 06:45:58,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:58,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:45:58,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919078225] [2020-10-29 06:45:58,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:45:58,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:58,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:45:58,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:45:58,505 INFO L87 Difference]: Start difference. First operand 22067 states and 24844 transitions. Second operand 6 states. [2020-10-29 06:46:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:01,063 INFO L93 Difference]: Finished difference Result 39742 states and 44738 transitions. [2020-10-29 06:46:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:01,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 437 [2020-10-29 06:46:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:01,105 INFO L225 Difference]: With dead ends: 39742 [2020-10-29 06:46:01,105 INFO L226 Difference]: Without dead ends: 20756 [2020-10-29 06:46:01,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20756 states. [2020-10-29 06:46:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20756 to 20682. [2020-10-29 06:46:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20682 states. [2020-10-29 06:46:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20682 states to 20682 states and 23170 transitions. [2020-10-29 06:46:01,478 INFO L78 Accepts]: Start accepts. Automaton has 20682 states and 23170 transitions. Word has length 437 [2020-10-29 06:46:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:01,479 INFO L481 AbstractCegarLoop]: Abstraction has 20682 states and 23170 transitions. [2020-10-29 06:46:01,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:46:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20682 states and 23170 transitions. [2020-10-29 06:46:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-29 06:46:01,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:01,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:46:01,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 06:46:01,493 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:01,494 INFO L82 PathProgramCache]: Analyzing trace with hash -974633288, now seen corresponding path program 1 times [2020-10-29 06:46:01,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:01,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053274909] [2020-10-29 06:46:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:05,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:05,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-29 06:46:05,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3873 [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-29 06:46:05,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:05,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:46:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:05,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:46:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:46:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:46:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:06,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:46:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:06,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-29 06:46:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:46:06,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:46:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:06,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 06:46:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 180 proven. 283 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-29 06:46:06,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053274909] [2020-10-29 06:46:06,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:06,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:46:06,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455206366] [2020-10-29 06:46:06,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:46:06,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:06,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:46:06,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:46:06,858 INFO L87 Difference]: Start difference. First operand 20682 states and 23170 transitions. Second operand 10 states. [2020-10-29 06:46:07,036 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:46:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:15,194 INFO L93 Difference]: Finished difference Result 47305 states and 53665 transitions. [2020-10-29 06:46:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:46:15,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 449 [2020-10-29 06:46:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:15,250 INFO L225 Difference]: With dead ends: 47305 [2020-10-29 06:46:15,250 INFO L226 Difference]: Without dead ends: 28926 [2020-10-29 06:46:15,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:46:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28926 states. [2020-10-29 06:46:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28926 to 27579. [2020-10-29 06:46:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27579 states. [2020-10-29 06:46:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27579 states to 27579 states and 30844 transitions. [2020-10-29 06:46:15,695 INFO L78 Accepts]: Start accepts. Automaton has 27579 states and 30844 transitions. Word has length 449 [2020-10-29 06:46:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:15,695 INFO L481 AbstractCegarLoop]: Abstraction has 27579 states and 30844 transitions. [2020-10-29 06:46:15,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:46:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 27579 states and 30844 transitions. [2020-10-29 06:46:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-29 06:46:15,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:15,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:15,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 06:46:15,702 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1318051731, now seen corresponding path program 1 times [2020-10-29 06:46:15,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:15,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716200362] [2020-10-29 06:46:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:20,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:20,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:46:20,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 06:46:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:46:20,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:20,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:21,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:21,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:46:21,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:21,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 06:46:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:21,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:46:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:46:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:21,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:21,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 06:46:21,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 06:46:21,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:21,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:46:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-29 06:46:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:21,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:21,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 180 proven. 142 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-29 06:46:21,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716200362] [2020-10-29 06:46:21,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:21,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:21,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992812487] [2020-10-29 06:46:21,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:21,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:21,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:21,852 INFO L87 Difference]: Start difference. First operand 27579 states and 30844 transitions. Second operand 7 states.