/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/mapavg1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:39:27,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:39:27,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:39:27,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:39:27,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:39:27,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:39:27,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:39:27,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:39:27,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:39:27,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:39:27,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:39:27,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:39:27,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:39:27,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:39:27,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:39:27,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:39:27,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:39:27,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:39:27,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:39:27,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:39:27,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:39:27,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:39:27,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:39:27,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:39:27,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:39:27,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:39:27,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:39:27,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:39:27,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:39:27,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:39:27,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:39:27,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:39:27,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:39:27,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:39:27,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:39:27,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:39:27,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:39:27,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:39:27,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:39:27,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:39:27,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:39:27,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 08:39:27,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:39:27,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:39:27,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:39:27,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:39:27,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:39:27,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:39:27,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:39:27,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:39:27,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:39:27,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:39:27,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:39:27,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:39:27,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:39:27,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:39:27,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:39:27,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:39:27,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:39:27,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:39:27,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:39:27,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:39:27,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:39:27,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:27,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:39:27,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:39:27,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:39:27,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:39:27,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:39:27,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:39:27,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:39:27,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:39:28,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:39:28,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:39:28,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:39:28,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:39:28,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:39:28,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg1.i [2020-10-28 08:39:28,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e22472ee/1e4a47564b1c4d6195960af2a5bf0854/FLAG6b83b6244 [2020-10-28 08:39:29,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:39:29,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg1.i [2020-10-28 08:39:29,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e22472ee/1e4a47564b1c4d6195960af2a5bf0854/FLAG6b83b6244 [2020-10-28 08:39:29,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e22472ee/1e4a47564b1c4d6195960af2a5bf0854 [2020-10-28 08:39:29,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:39:29,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:39:29,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:29,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:39:29,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:39:29,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:29,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344291fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29, skipping insertion in model container [2020-10-28 08:39:29,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:29,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:39:29,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:39:29,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:29,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:39:29,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:29,962 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:39:29,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29 WrapperNode [2020-10-28 08:39:29,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:29,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:39:29,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:39:29,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:39:29,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:29,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:29,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:29,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:30,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:30,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:30,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... [2020-10-28 08:39:30,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:39:30,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:39:30,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:39:30,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:39:30,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:39:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:39:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:39:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-28 08:39:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:39:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:39:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:39:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:39:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:39:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:39:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:39:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:39:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-28 08:39:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:39:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:39:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:39:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:39:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:39:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:39:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:39:30,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:39:30,743 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:39:30,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:30 BoogieIcfgContainer [2020-10-28 08:39:30,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:39:30,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:39:30,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:39:30,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:39:30,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:29" (1/3) ... [2020-10-28 08:39:30,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb853a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:30, skipping insertion in model container [2020-10-28 08:39:30,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:29" (2/3) ... [2020-10-28 08:39:30,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb853a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:30, skipping insertion in model container [2020-10-28 08:39:30,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:30" (3/3) ... [2020-10-28 08:39:30,766 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg1.i [2020-10-28 08:39:30,780 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:39:30,787 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:39:30,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:39:30,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:39:30,852 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:39:30,852 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:39:30,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:39:30,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:39:30,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:39:30,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:39:30,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:39:30,878 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 08:39:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:30,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:30,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:30,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692497, now seen corresponding path program 1 times [2020-10-28 08:39:30,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:30,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543707882] [2020-10-28 08:39:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:32,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:32,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:32,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-10-28 08:39:32,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:32,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:39:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:32,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:32,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:32,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:33,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:33,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:33,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:39:33,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:33,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:33,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:33,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:33,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:33,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:33,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:33,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:33,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:39:33,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543707882] [2020-10-28 08:39:33,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:33,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 08:39:33,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148498500] [2020-10-28 08:39:33,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:39:33,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:33,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:39:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:33,132 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 08:39:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:33,269 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 08:39:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:39:33,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 08:39:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:33,281 INFO L225 Difference]: With dead ends: 60 [2020-10-28 08:39:33,282 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 08:39:33,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 08:39:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 08:39:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:39:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 08:39:33,354 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 08:39:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:33,356 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 08:39:33,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:39:33,356 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 08:39:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:33,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:33,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:33,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:39:33,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:33,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1911757649, now seen corresponding path program 1 times [2020-10-28 08:39:33,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:33,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401950978] [2020-10-28 08:39:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:35,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2459 [2020-10-28 08:39:35,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:39:35,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:35,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:39:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:35,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:39:35,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:36,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:36,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:39:36,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:36,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:39:36,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401950978] [2020-10-28 08:39:36,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:36,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:36,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851115536] [2020-10-28 08:39:36,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:36,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:36,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:36,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:36,034 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 08:39:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:36,166 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-28 08:39:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:36,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 08:39:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:36,168 INFO L225 Difference]: With dead ends: 50 [2020-10-28 08:39:36,168 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 08:39:36,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 08:39:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 08:39:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:39:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 08:39:36,189 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 08:39:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:36,191 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 08:39:36,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 08:39:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 08:39:36,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:36,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:36,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:39:36,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1249483955, now seen corresponding path program 1 times [2020-10-28 08:39:36,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:36,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473879856] [2020-10-28 08:39:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:39,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 08:39:39,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2946 [2020-10-28 08:39:39,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:39,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:39,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:39,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:39,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:39,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:39:39,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:39,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:39:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:39,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:39,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:39:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:39,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:39:39,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:39,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:39:39,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473879856] [2020-10-28 08:39:39,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:39,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:39,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164813742] [2020-10-28 08:39:39,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:39,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:39,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:39,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:39,293 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 08:39:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:39,402 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 08:39:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:39,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 08:39:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:39,404 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:39,404 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:39:39,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:39:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:39:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:39:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 08:39:39,414 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-28 08:39:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:39,414 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 08:39:39,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 08:39:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 08:39:39,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:39,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:39,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:39:39,416 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash 459623829, now seen corresponding path program 2 times [2020-10-28 08:39:39,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:39,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704559023] [2020-10-28 08:39:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 08:39:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3808 [2020-10-28 08:39:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:39:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:39:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:43,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:43,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:43,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:43,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:43,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:43,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:39:43,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:43,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:39:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:43,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:43,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:39:43,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704559023] [2020-10-28 08:39:43,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:43,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:43,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156064622] [2020-10-28 08:39:43,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:43,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:43,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:43,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:43,382 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 08:39:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:43,517 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 08:39:43,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:43,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 08:39:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:43,520 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:43,520 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:39:43,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:39:43,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:39:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:39:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:39:43,539 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-10-28 08:39:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:43,539 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:39:43,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:39:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 08:39:43,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:43,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:43,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:39:43,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:43,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1310881933, now seen corresponding path program 1 times [2020-10-28 08:39:43,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:43,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178806975] [2020-10-28 08:39:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:48,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 08:39:48,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:48,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:39:48,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:48,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:48,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:39:48,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:48,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:48,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:48,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:48,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:48,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:48,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:48,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:48,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:39:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:48,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:48,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:48,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:39:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:48,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:39:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:48,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:48,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:39:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:48,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:39:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 08:39:48,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178806975] [2020-10-28 08:39:48,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:48,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:48,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113858781] [2020-10-28 08:39:48,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:48,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:48,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:48,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:48,744 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 08:39:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:48,890 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-28 08:39:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:48,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 08:39:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:48,892 INFO L225 Difference]: With dead ends: 55 [2020-10-28 08:39:48,892 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:39:48,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:39:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:39:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:39:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:39:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 08:39:48,900 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 44 [2020-10-28 08:39:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:48,900 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 08:39:48,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 08:39:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 08:39:48,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:48,902 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:48,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:39:48,902 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:48,903 INFO L82 PathProgramCache]: Analyzing trace with hash 869573329, now seen corresponding path program 2 times [2020-10-28 08:39:48,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:48,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508671823] [2020-10-28 08:39:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 08:39:53,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:39:53,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:53,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 08:39:53,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:53,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:53,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:53,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:39:53,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:54,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:54,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:39:54,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:54,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:54,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:54,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:39:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:54,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:39:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:39:54,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:54,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 08:39:54,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508671823] [2020-10-28 08:39:54,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:54,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:54,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372132285] [2020-10-28 08:39:54,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:54,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:54,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:54,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:54,125 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 08:39:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:54,222 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 08:39:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:54,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 08:39:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:54,224 INFO L225 Difference]: With dead ends: 53 [2020-10-28 08:39:54,224 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 08:39:54,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 08:39:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 08:39:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:39:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 08:39:54,239 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 08:39:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:54,241 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 08:39:54,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 08:39:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:39:54,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:54,246 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:54,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:39:54,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:54,247 INFO L82 PathProgramCache]: Analyzing trace with hash 163608655, now seen corresponding path program 1 times [2020-10-28 08:39:54,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:54,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258746788] [2020-10-28 08:39:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:39:59,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:39:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:39:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 08:39:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:59,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:59,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:39:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:59,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:39:59,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:39:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:39:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:59,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:39:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-28 08:39:59,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258746788] [2020-10-28 08:39:59,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:59,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:39:59,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169459724] [2020-10-28 08:39:59,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:39:59,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:59,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:39:59,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:39:59,477 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 08:39:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:59,657 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-28 08:39:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:39:59,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 08:39:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:59,659 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:39:59,659 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:39:59,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:39:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:39:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:39:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:39:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 08:39:59,670 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 08:39:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:59,671 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 08:39:59,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:39:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 08:39:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 08:39:59,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:59,675 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:59,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:39:59,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:59,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2113036883, now seen corresponding path program 2 times [2020-10-28 08:39:59,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:59,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002267996] [2020-10-28 08:39:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 08:40:04,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 08:40:04,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:04,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:40:04,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:04,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 08:40:04,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:40:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:04,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 08:40:04,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:40:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 08:40:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 08:40:05,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002267996] [2020-10-28 08:40:05,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:05,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:05,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36712333] [2020-10-28 08:40:05,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:05,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:05,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:05,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:05,002 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 08:40:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:05,118 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-28 08:40:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:05,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 08:40:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:05,120 INFO L225 Difference]: With dead ends: 66 [2020-10-28 08:40:05,120 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:40:05,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:40:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 08:40:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:40:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 08:40:05,136 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-28 08:40:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:05,136 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 08:40:05,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 08:40:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 08:40:05,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:05,138 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:05,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:40:05,138 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:05,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1713465073, now seen corresponding path program 3 times [2020-10-28 08:40:05,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:05,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072560728] [2020-10-28 08:40:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:40:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:40:10,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:10,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:40:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:40:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:40:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:10,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:10,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:10,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:40:10,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:10,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:10,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:10,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:40:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:10,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:10,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:10,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 08:40:10,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072560728] [2020-10-28 08:40:10,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:10,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:40:10,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868362804] [2020-10-28 08:40:10,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:40:10,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:10,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:40:10,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:10,366 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 08:40:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:10,447 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 08:40:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:40:10,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 08:40:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:10,448 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:40:10,448 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:40:10,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:40:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 08:40:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:40:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 08:40:10,455 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 08:40:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:10,456 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 08:40:10,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:40:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 08:40:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:40:10,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:10,457 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:10,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:40:10,457 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:10,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:10,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1890558195, now seen corresponding path program 4 times [2020-10-28 08:40:10,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:10,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366552148] [2020-10-28 08:40:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:40:15,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:40:15,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 08:40:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:15,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:15,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:15,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:40:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 08:40:15,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366552148] [2020-10-28 08:40:15,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:15,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:15,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722902152] [2020-10-28 08:40:15,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:15,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:15,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:15,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:15,656 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 08:40:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:15,845 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 08:40:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:15,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 08:40:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:15,847 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:40:15,847 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:40:15,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:40:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:40:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:40:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:40:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 08:40:15,854 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 08:40:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:15,854 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 08:40:15,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 08:40:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:40:15,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:15,856 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:15,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:40:15,856 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1878252779, now seen corresponding path program 5 times [2020-10-28 08:40:15,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:15,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737504608] [2020-10-28 08:40:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 08:40:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:20,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 08:40:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:20,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:20,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:20,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 08:40:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:21,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:40:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:21,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:21,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:40:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:40:21,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:21,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 08:40:21,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737504608] [2020-10-28 08:40:21,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:21,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:21,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367206936] [2020-10-28 08:40:21,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:21,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:21,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:21,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:21,108 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 08:40:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:21,422 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 08:40:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:21,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-28 08:40:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:21,428 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:21,429 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 08:40:21,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:40:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 08:40:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 08:40:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:40:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 08:40:21,436 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-28 08:40:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:21,436 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 08:40:21,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 08:40:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:40:21,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:21,437 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:21,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:40:21,438 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:21,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1464222647, now seen corresponding path program 6 times [2020-10-28 08:40:21,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:21,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026411240] [2020-10-28 08:40:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:26,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 08:40:26,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 08:40:26,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:26,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:26,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:26,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:26,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:40:26,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:26,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:26,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:26,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:26,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 08:40:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:26,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:40:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:26,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026411240] [2020-10-28 08:40:26,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:26,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:26,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902923009] [2020-10-28 08:40:26,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:26,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:26,709 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 08:40:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:26,829 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-28 08:40:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:26,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 08:40:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:26,830 INFO L225 Difference]: With dead ends: 80 [2020-10-28 08:40:26,830 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 08:40:26,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 08:40:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 08:40:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 08:40:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 08:40:26,840 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 74 [2020-10-28 08:40:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:26,840 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 08:40:26,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 08:40:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:40:26,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:26,847 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:26,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:40:26,847 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:26,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1908690005, now seen corresponding path program 7 times [2020-10-28 08:40:26,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:26,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137393154] [2020-10-28 08:40:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:31,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:31,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:31,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:31,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:31,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 08:40:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:32,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:40:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:32,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:32,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137393154] [2020-10-28 08:40:32,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:32,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:32,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860647524] [2020-10-28 08:40:32,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:32,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:32,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:32,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:32,109 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 08:40:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:32,235 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-28 08:40:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:32,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 08:40:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:32,236 INFO L225 Difference]: With dead ends: 82 [2020-10-28 08:40:32,236 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:40:32,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:40:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:40:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:40:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 08:40:32,244 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-28 08:40:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:32,245 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 08:40:32,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 08:40:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 08:40:32,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:32,246 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:32,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:40:32,246 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:32,247 INFO L82 PathProgramCache]: Analyzing trace with hash 454908557, now seen corresponding path program 8 times [2020-10-28 08:40:32,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:32,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644471989] [2020-10-28 08:40:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:37,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:40:37,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:37,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:40:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:37,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 08:40:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:37,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:37,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:40:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:37,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:37,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:37,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:40:37,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:37,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:37,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:40:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 08:40:37,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:37,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 08:40:37,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644471989] [2020-10-28 08:40:37,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:37,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:37,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757273823] [2020-10-28 08:40:37,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:37,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:37,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:37,602 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 08:40:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:37,732 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-28 08:40:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:37,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 08:40:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:37,736 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:37,736 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 08:40:37,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 08:40:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 08:40:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 08:40:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 08:40:37,756 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 08:40:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:37,759 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 08:40:37,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 08:40:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:40:37,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:37,761 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:37,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:40:37,761 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash 657705227, now seen corresponding path program 9 times [2020-10-28 08:40:37,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:37,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390680309] [2020-10-28 08:40:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:40:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:42,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:42,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:40:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:43,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:43,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:43,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 08:40:43,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:43,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:40:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:43,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:43,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 08:40:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:43,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 08:40:43,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390680309] [2020-10-28 08:40:43,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:43,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:43,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125698426] [2020-10-28 08:40:43,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:43,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:43,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:43,183 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 08:40:43,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:43,514 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 08:40:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:43,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 08:40:43,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:43,516 INFO L225 Difference]: With dead ends: 87 [2020-10-28 08:40:43,516 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 08:40:43,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:40:43,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 08:40:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 08:40:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 08:40:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 08:40:43,534 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 08:40:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:43,534 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 08:40:43,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 08:40:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 08:40:43,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:43,535 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:43,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:40:43,536 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:43,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:43,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1984573289, now seen corresponding path program 10 times [2020-10-28 08:40:43,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:43,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339089850] [2020-10-28 08:40:43,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:40:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:48,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:48,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:48,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:48,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:40:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:48,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:40:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:48,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:48,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 08:40:48,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:48,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:48,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:40:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:48,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:48,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 08:40:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:48,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 08:40:48,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339089850] [2020-10-28 08:40:48,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:48,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:48,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259097243] [2020-10-28 08:40:48,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:48,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:48,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:48,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:48,928 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 08:40:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:49,247 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-28 08:40:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:49,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 08:40:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:49,248 INFO L225 Difference]: With dead ends: 91 [2020-10-28 08:40:49,248 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:40:49,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:40:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:40:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 08:40:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:40:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 08:40:49,255 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-28 08:40:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:49,256 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 08:40:49,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 08:40:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 08:40:49,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:49,257 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:49,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:40:49,257 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:49,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1027238073, now seen corresponding path program 11 times [2020-10-28 08:40:49,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:49,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35727927] [2020-10-28 08:40:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:54,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:40:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:54,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:40:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:40:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:40:54,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35727927] [2020-10-28 08:40:54,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:54,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:54,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921939962] [2020-10-28 08:40:54,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:54,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:54,621 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 08:40:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:54,783 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-28 08:40:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:54,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 08:40:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:54,785 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:40:54,785 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 08:40:54,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:54,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 08:40:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 08:40:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:40:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 08:40:54,793 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 92 [2020-10-28 08:40:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:54,793 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 08:40:54,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 08:40:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 08:40:54,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:54,795 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:54,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:40:54,795 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash -913229271, now seen corresponding path program 12 times [2020-10-28 08:40:54,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:54,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760701288] [2020-10-28 08:40:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:40:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:59,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:59,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:59,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:59,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:40:59,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:00,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:41:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:00,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:41:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:41:00,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760701288] [2020-10-28 08:41:00,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:00,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:41:00,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136493054] [2020-10-28 08:41:00,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:41:00,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:41:00,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:00,189 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 08:41:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:00,311 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-28 08:41:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:41:00,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-28 08:41:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:00,313 INFO L225 Difference]: With dead ends: 98 [2020-10-28 08:41:00,313 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:41:00,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:41:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:41:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:41:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 08:41:00,321 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-28 08:41:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:00,321 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 08:41:00,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:41:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 08:41:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 08:41:00,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:00,322 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:00,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:41:00,323 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1275047051, now seen corresponding path program 13 times [2020-10-28 08:41:00,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:00,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903748706] [2020-10-28 08:41:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:41:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 08:41:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:41:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:05,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:05,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:05,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:05,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:41:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 08:41:05,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903748706] [2020-10-28 08:41:05,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:05,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:41:05,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108623057] [2020-10-28 08:41:05,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:41:05,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:05,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:41:05,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:05,604 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 08:41:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:05,741 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 08:41:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:41:05,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 08:41:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:05,743 INFO L225 Difference]: With dead ends: 89 [2020-10-28 08:41:05,744 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:41:05,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:41:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:41:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:41:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 08:41:05,754 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 08:41:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:05,754 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 08:41:05,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:41:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 08:41:05,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 08:41:05,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:05,756 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:05,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:41:05,756 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:05,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1240423543, now seen corresponding path program 14 times [2020-10-28 08:41:05,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:05,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239684800] [2020-10-28 08:41:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:41:10,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 08:41:10,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 08:41:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:10,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:10,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:10,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:41:10,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:10,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:41:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:11,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:11,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-28 08:41:11,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239684800] [2020-10-28 08:41:11,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:11,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:11,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907936505] [2020-10-28 08:41:11,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:11,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:11,108 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 08:41:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:11,482 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-28 08:41:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:11,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 08:41:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:11,484 INFO L225 Difference]: With dead ends: 103 [2020-10-28 08:41:11,484 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:41:11,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:41:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:41:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 08:41:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:41:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 08:41:11,492 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 08:41:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:11,492 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 08:41:11,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 08:41:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 08:41:11,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:11,493 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:11,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:41:11,494 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:11,494 INFO L82 PathProgramCache]: Analyzing trace with hash -336211353, now seen corresponding path program 15 times [2020-10-28 08:41:11,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:11,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394937950] [2020-10-28 08:41:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:16,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 08:41:16,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:41:16,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:16,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:16,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:16,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:16,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:16,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:16,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:41:16,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:16,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:41:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:16,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-28 08:41:16,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394937950] [2020-10-28 08:41:16,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:16,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:16,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71877332] [2020-10-28 08:41:16,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:16,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:16,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:16,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:16,887 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 08:41:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:17,036 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-28 08:41:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:17,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-28 08:41:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:17,037 INFO L225 Difference]: With dead ends: 108 [2020-10-28 08:41:17,037 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:41:17,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:41:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 08:41:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 08:41:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 08:41:17,044 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-28 08:41:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:17,044 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 08:41:17,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 08:41:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 08:41:17,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:17,046 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:17,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:41:17,046 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1811271095, now seen corresponding path program 16 times [2020-10-28 08:41:17,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:17,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233012487] [2020-10-28 08:41:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:41:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 08:41:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:41:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:22,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:22,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:41:22,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:41:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 08:41:22,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233012487] [2020-10-28 08:41:22,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:22,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:41:22,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974453430] [2020-10-28 08:41:22,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:41:22,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:41:22,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:22,400 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 08:41:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:22,532 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-28 08:41:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:41:22,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 08:41:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:22,537 INFO L225 Difference]: With dead ends: 97 [2020-10-28 08:41:22,537 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:41:22,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:41:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 08:41:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 08:41:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 08:41:22,544 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 08:41:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:22,544 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 08:41:22,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:41:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 08:41:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 08:41:22,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:22,545 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:22,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:41:22,546 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash -231654969, now seen corresponding path program 17 times [2020-10-28 08:41:22,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:22,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896216606] [2020-10-28 08:41:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:22,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 08:41:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:27,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:27,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:27,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:27,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:27,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:41:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:27,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-28 08:41:27,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896216606] [2020-10-28 08:41:27,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:27,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:27,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420036667] [2020-10-28 08:41:27,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:27,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:27,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:27,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:27,965 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 08:41:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:28,442 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-28 08:41:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:28,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 08:41:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:28,445 INFO L225 Difference]: With dead ends: 113 [2020-10-28 08:41:28,445 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 08:41:28,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:41:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 08:41:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 08:41:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:41:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 08:41:28,460 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 08:41:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:28,460 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 08:41:28,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 08:41:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 08:41:28,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:28,462 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:28,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:41:28,464 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash -785030875, now seen corresponding path program 18 times [2020-10-28 08:41:28,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:28,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163552020] [2020-10-28 08:41:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 08:41:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:33,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:33,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:41:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:41:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:33,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:33,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:33,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 08:41:33,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:33,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-28 08:41:33,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163552020] [2020-10-28 08:41:33,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:33,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914909381] [2020-10-28 08:41:33,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:33,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:33,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:33,964 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 08:41:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:34,462 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-28 08:41:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:34,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-28 08:41:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:34,463 INFO L225 Difference]: With dead ends: 117 [2020-10-28 08:41:34,464 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:41:34,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:41:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:41:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 08:41:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 08:41:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 08:41:34,472 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-28 08:41:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:34,472 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 08:41:34,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 08:41:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 08:41:34,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:34,474 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:34,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:41:34,474 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1431287293, now seen corresponding path program 19 times [2020-10-28 08:41:34,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:34,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010964428] [2020-10-28 08:41:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:39,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 08:41:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:41:39,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:39,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:39,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:39,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:39,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:39,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:39,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:39,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:39,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:41:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:41:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 08:41:39,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:41:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:39,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:39,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:39,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010964428] [2020-10-28 08:41:39,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:39,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:39,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915082984] [2020-10-28 08:41:39,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:39,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:39,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:39,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:39,972 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 08:41:40,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:40,131 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-28 08:41:40,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:40,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-28 08:41:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:40,133 INFO L225 Difference]: With dead ends: 122 [2020-10-28 08:41:40,133 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:41:40,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:41:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:41:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:41:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 08:41:40,140 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-28 08:41:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:40,140 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 08:41:40,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 08:41:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 08:41:40,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:40,141 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:40,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:41:40,141 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:40,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:40,142 INFO L82 PathProgramCache]: Analyzing trace with hash -367221275, now seen corresponding path program 20 times [2020-10-28 08:41:40,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:40,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132332420] [2020-10-28 08:41:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:45,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:41:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:45,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:45,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 08:41:45,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:45,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:45,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:45,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:41:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:41:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:45,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132332420] [2020-10-28 08:41:45,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:45,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:45,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642298396] [2020-10-28 08:41:45,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:45,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:45,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:45,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:45,695 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 08:41:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:45,876 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-10-28 08:41:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:45,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-28 08:41:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:45,878 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:41:45,878 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 08:41:45,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 08:41:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 08:41:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 08:41:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 08:41:45,890 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-28 08:41:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:45,891 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 08:41:45,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 08:41:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 08:41:45,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:45,896 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:45,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:41:45,897 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:45,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1994425, now seen corresponding path program 21 times [2020-10-28 08:41:45,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:45,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299544604] [2020-10-28 08:41:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 08:41:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:41:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:41:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:41:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:51,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:51,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 08:41:51,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:51,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:51,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 08:41:51,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299544604] [2020-10-28 08:41:51,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:51,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:41:51,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130200837] [2020-10-28 08:41:51,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:41:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:41:51,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:51,357 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 08:41:51,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:51,517 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 08:41:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:41:51,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 08:41:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:51,519 INFO L225 Difference]: With dead ends: 111 [2020-10-28 08:41:51,519 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 08:41:51,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 08:41:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 08:41:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 08:41:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 08:41:51,530 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 08:41:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:51,531 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 08:41:51,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:41:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 08:41:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 08:41:51,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:51,535 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:51,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:41:51,535 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:51,537 INFO L82 PathProgramCache]: Analyzing trace with hash -446176955, now seen corresponding path program 22 times [2020-10-28 08:41:51,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:51,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404743115] [2020-10-28 08:41:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:56,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 08:41:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 08:41:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:56,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:41:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:56,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:56,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 08:41:56,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:56,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:56,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:41:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:57,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:57,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 08:41:57,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:57,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2020-10-28 08:41:57,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404743115] [2020-10-28 08:41:57,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:57,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:41:57,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502481698] [2020-10-28 08:41:57,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:41:57,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:57,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:41:57,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:57,098 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 08:41:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:57,646 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-28 08:41:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:41:57,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 08:41:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:57,647 INFO L225 Difference]: With dead ends: 129 [2020-10-28 08:41:57,648 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 08:41:57,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:41:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 08:41:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 08:41:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:41:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 08:41:57,655 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 08:41:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:57,656 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 08:41:57,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:41:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 08:41:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 08:41:57,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:57,657 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:57,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:41:57,657 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:57,658 INFO L82 PathProgramCache]: Analyzing trace with hash 776900899, now seen corresponding path program 23 times [2020-10-28 08:41:57,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:57,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797304555] [2020-10-28 08:41:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:42:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:42:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:02,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:42:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:42:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:42:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:03,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 08:42:03,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797304555] [2020-10-28 08:42:03,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:03,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:42:03,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479808291] [2020-10-28 08:42:03,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:42:03,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:03,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:42:03,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:42:03,289 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 08:42:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:03,452 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-28 08:42:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:42:03,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 08:42:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:03,454 INFO L225 Difference]: With dead ends: 134 [2020-10-28 08:42:03,454 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 08:42:03,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:42:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 08:42:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 08:42:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:42:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 08:42:03,461 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-28 08:42:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:03,462 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 08:42:03,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:42:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 08:42:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 08:42:03,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:03,463 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:03,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:42:03,463 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash -826922491, now seen corresponding path program 24 times [2020-10-28 08:42:03,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:03,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224089249] [2020-10-28 08:42:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:42:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:08,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:08,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 08:42:08,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:08,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:08,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:08,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:42:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:09,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:09,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 08:42:09,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:09,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:09,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:09,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:09,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:09,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 08:42:09,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224089249] [2020-10-28 08:42:09,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:09,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:42:09,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949590656] [2020-10-28 08:42:09,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:42:09,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:09,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:42:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:09,016 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 08:42:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:09,158 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-28 08:42:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:42:09,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 08:42:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:09,160 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:42:09,160 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 08:42:09,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 08:42:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 08:42:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:42:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 08:42:09,168 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 08:42:09,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:09,169 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 08:42:09,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:42:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 08:42:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 08:42:09,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:09,170 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:09,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:42:09,170 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:09,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1972619907, now seen corresponding path program 25 times [2020-10-28 08:42:09,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:09,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961200594] [2020-10-28 08:42:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:09,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 08:42:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 08:42:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:42:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:14,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:42:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:14,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:14,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 08:42:14,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961200594] [2020-10-28 08:42:14,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:14,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:14,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117960254] [2020-10-28 08:42:14,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:14,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:14,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:14,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:14,754 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 08:42:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:15,328 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-28 08:42:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:15,329 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 08:42:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:15,330 INFO L225 Difference]: With dead ends: 139 [2020-10-28 08:42:15,330 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:42:15,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:42:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:42:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 08:42:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:42:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 08:42:15,342 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 08:42:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:15,343 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 08:42:15,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 08:42:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 08:42:15,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:15,344 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:15,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:42:15,344 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash 634008289, now seen corresponding path program 26 times [2020-10-28 08:42:15,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:15,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381130622] [2020-10-28 08:42:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:42:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:20,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 08:42:20,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:42:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:42:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:42:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 08:42:21,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381130622] [2020-10-28 08:42:21,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:21,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:21,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188929638] [2020-10-28 08:42:21,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:21,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:21,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:21,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:21,097 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 08:42:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:21,751 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-28 08:42:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:21,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 08:42:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:21,753 INFO L225 Difference]: With dead ends: 143 [2020-10-28 08:42:21,753 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:42:21,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:42:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:42:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 08:42:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:42:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 08:42:21,763 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 08:42:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:21,763 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 08:42:21,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 08:42:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 08:42:21,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:21,764 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:21,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:42:21,765 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:21,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1224139585, now seen corresponding path program 27 times [2020-10-28 08:42:21,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:21,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335612903] [2020-10-28 08:42:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:21,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 08:42:26,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:42:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:26,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:26,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:26,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:26,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:27,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:27,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:27,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:42:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:42:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 08:42:27,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:27,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:27,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335612903] [2020-10-28 08:42:27,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:27,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:27,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68145547] [2020-10-28 08:42:27,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:27,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:27,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:27,489 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 08:42:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:27,697 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-28 08:42:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:27,697 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 08:42:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:27,698 INFO L225 Difference]: With dead ends: 148 [2020-10-28 08:42:27,698 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 08:42:27,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 08:42:27,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 08:42:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 08:42:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 08:42:27,711 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 08:42:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:27,711 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 08:42:27,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 08:42:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 08:42:27,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:27,713 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:27,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:42:27,713 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:27,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1154043487, now seen corresponding path program 28 times [2020-10-28 08:42:27,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:27,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517754512] [2020-10-28 08:42:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 08:42:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 08:42:32,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:33,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:33,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:33,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:33,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:42:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:42:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:33,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:33,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 08:42:33,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:33,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:42:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:33,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517754512] [2020-10-28 08:42:33,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:33,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:33,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704515910] [2020-10-28 08:42:33,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:33,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:33,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:33,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:33,522 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 08:42:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:33,742 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-28 08:42:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:33,742 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 08:42:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:33,744 INFO L225 Difference]: With dead ends: 150 [2020-10-28 08:42:33,744 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 08:42:33,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 08:42:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 08:42:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:42:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 08:42:33,752 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 08:42:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:33,752 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 08:42:33,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 08:42:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 08:42:33,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:33,753 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:33,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:42:33,754 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1783797251, now seen corresponding path program 29 times [2020-10-28 08:42:33,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:33,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082059425] [2020-10-28 08:42:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:42:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:38,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:39,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:39,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 08:42:39,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:39,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:42:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:39,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 08:42:39,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082059425] [2020-10-28 08:42:39,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:39,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:42:39,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108532838] [2020-10-28 08:42:39,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:42:39,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:39,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:42:39,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:39,434 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 08:42:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:39,556 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-28 08:42:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:42:39,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 08:42:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:39,558 INFO L225 Difference]: With dead ends: 133 [2020-10-28 08:42:39,558 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 08:42:39,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 08:42:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 08:42:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 08:42:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 08:42:39,564 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 08:42:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:39,565 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 08:42:39,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:42:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 08:42:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 08:42:39,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:39,566 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:39,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:42:39,566 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash 653541121, now seen corresponding path program 30 times [2020-10-28 08:42:39,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:39,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756977684] [2020-10-28 08:42:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:44,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:44,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:44,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:44,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:44,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:44,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:45,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:45,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:45,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 08:42:45,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:45,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:42:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 08:42:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:45,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:45,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-28 08:42:45,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756977684] [2020-10-28 08:42:45,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:45,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:45,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239948145] [2020-10-28 08:42:45,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:45,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:45,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:45,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:45,361 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 08:42:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:45,591 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-28 08:42:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:45,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 08:42:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:45,593 INFO L225 Difference]: With dead ends: 156 [2020-10-28 08:42:45,594 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:42:45,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:42:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 08:42:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 08:42:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 08:42:45,601 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 08:42:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:45,601 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 08:42:45,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 08:42:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 08:42:45,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:45,602 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 14, 14, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:45,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:42:45,603 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:45,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:45,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1659052643, now seen corresponding path program 31 times [2020-10-28 08:42:45,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:45,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733759611] [2020-10-28 08:42:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:50,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:50,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:50,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:50,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:42:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 08:42:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:51,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:51,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:42:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:51,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:51,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 08:42:51,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:51,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1874 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-28 08:42:51,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733759611] [2020-10-28 08:42:51,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:51,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:42:51,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884736948] [2020-10-28 08:42:51,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:42:51,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:51,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:42:51,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:51,392 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 08:42:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:51,530 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-10-28 08:42:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:42:51,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-10-28 08:42:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:51,532 INFO L225 Difference]: With dead ends: 158 [2020-10-28 08:42:51,532 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:42:51,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:42:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 08:42:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 08:42:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 08:42:51,541 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 156 [2020-10-28 08:42:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:51,541 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 08:42:51,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:42:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 08:42:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 08:42:51,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:51,543 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:51,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:42:51,543 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1587983685, now seen corresponding path program 32 times [2020-10-28 08:42:51,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:51,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799647758] [2020-10-28 08:42:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:56,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 08:42:56,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:56,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:56,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:42:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 08:42:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:56,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:56,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:56,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:42:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:57,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:57,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 08:42:57,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:57,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2020-10-28 08:42:57,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799647758] [2020-10-28 08:42:57,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:57,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:57,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016240388] [2020-10-28 08:42:57,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:57,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:57,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:57,300 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 08:42:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:58,023 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-10-28 08:42:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:58,024 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 158 [2020-10-28 08:42:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:58,025 INFO L225 Difference]: With dead ends: 159 [2020-10-28 08:42:58,025 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 08:42:58,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:42:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 08:42:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 08:42:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 08:42:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 08:42:58,033 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-28 08:42:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:58,033 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 08:42:58,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 08:42:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 08:42:58,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:58,036 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:58,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:42:58,036 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:58,037 INFO L82 PathProgramCache]: Analyzing trace with hash -429219037, now seen corresponding path program 33 times [2020-10-28 08:42:58,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:58,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450952699] [2020-10-28 08:42:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:03,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 08:43:03,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:43:03,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:03,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:03,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:03,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:03,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 08:43:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:43:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:43:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:43:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:03,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2020-10-28 08:43:03,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450952699] [2020-10-28 08:43:03,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:03,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:43:03,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482568028] [2020-10-28 08:43:03,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:43:03,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:03,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:43:03,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:43:03,865 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 08:43:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:04,586 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-28 08:43:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:43:04,587 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-28 08:43:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:04,588 INFO L225 Difference]: With dead ends: 163 [2020-10-28 08:43:04,588 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 08:43:04,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:43:04,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 08:43:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 08:43:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 08:43:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 08:43:04,596 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-28 08:43:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:04,597 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 08:43:04,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:43:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 08:43:04,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 08:43:04,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:04,598 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:04,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:43:04,599 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:04,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:04,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1668287871, now seen corresponding path program 34 times [2020-10-28 08:43:04,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:04,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203797537] [2020-10-28 08:43:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:43:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:09,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:09,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:09,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:09,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:09,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:43:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:10,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 08:43:10,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203797537] [2020-10-28 08:43:10,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:10,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:43:10,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093639341] [2020-10-28 08:43:10,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:43:10,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:10,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:43:10,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:10,425 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 08:43:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:10,533 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-28 08:43:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:43:10,534 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 08:43:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:10,535 INFO L225 Difference]: With dead ends: 147 [2020-10-28 08:43:10,535 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 08:43:10,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 08:43:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 08:43:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:43:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 08:43:10,543 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 08:43:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:10,543 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 08:43:10,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:43:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 08:43:10,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 08:43:10,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:10,544 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:10,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:43:10,544 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:10,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:10,545 INFO L82 PathProgramCache]: Analyzing trace with hash -59538433, now seen corresponding path program 35 times [2020-10-28 08:43:10,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:10,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276027241] [2020-10-28 08:43:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:10,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:15,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:15,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:15,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:16,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 08:43:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:43:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:16,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:16,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:16,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2020-10-28 08:43:16,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276027241] [2020-10-28 08:43:16,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:16,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:16,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506948467] [2020-10-28 08:43:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:16,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:16,534 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 08:43:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:16,773 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-28 08:43:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:16,773 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 08:43:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:16,774 INFO L225 Difference]: With dead ends: 172 [2020-10-28 08:43:16,775 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 08:43:16,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 08:43:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 08:43:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:43:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 08:43:16,782 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 08:43:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:16,782 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 08:43:16,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 08:43:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 08:43:16,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:16,783 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:16,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:43:16,784 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:16,784 INFO L82 PathProgramCache]: Analyzing trace with hash 684266209, now seen corresponding path program 36 times [2020-10-28 08:43:16,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:16,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845675916] [2020-10-28 08:43:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 08:43:21,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 08:43:21,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:43:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:21,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:21,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:21,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:43:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:21,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:22,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:22,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 08:43:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 08:43:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2467 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2020-10-28 08:43:22,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845675916] [2020-10-28 08:43:22,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:22,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:22,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351941779] [2020-10-28 08:43:22,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:22,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:22,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:22,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:22,820 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states.