/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:30:36,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:30:36,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:30:37,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:30:37,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:30:37,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:30:37,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:30:37,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:30:37,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:30:37,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:30:37,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:30:37,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:30:37,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:30:37,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:30:37,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:30:37,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:30:37,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:30:37,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:30:37,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:30:37,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:30:37,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:30:37,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:30:37,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:30:37,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:30:37,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:30:37,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:30:37,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:30:37,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:30:37,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:30:37,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 03:30:37,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:30:37,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:30:37,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:30:37,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:30:37,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:30:37,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:30:37,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:30:37,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:30:37,148 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:30:37,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:30:37,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:30:37,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:30:37,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:30:37,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:30:37,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:30:37,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:30:37,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:30:37,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:30:37,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:30:37,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:30:37,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:30:37,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:30:37,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:30:37,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:30:37,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:30:37,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:37,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:30:37,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:30:37,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:30:37,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:30:37,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:30:37,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:30:37,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:30:37,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:30:37,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:30:37,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:30:37,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:30:37,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:30:37,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:30:37,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2020-10-29 03:30:37,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc43d2d0a/6cce00efac364adf98d30e08c96a98a0/FLAG823537a63 [2020-10-29 03:30:38,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:30:38,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2020-10-29 03:30:38,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc43d2d0a/6cce00efac364adf98d30e08c96a98a0/FLAG823537a63 [2020-10-29 03:30:38,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc43d2d0a/6cce00efac364adf98d30e08c96a98a0 [2020-10-29 03:30:38,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:30:38,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:30:38,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:38,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:30:38,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:30:38,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7246770f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38, skipping insertion in model container [2020-10-29 03:30:38,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:30:38,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:30:38,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:38,886 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:30:38,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:38,932 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:30:38,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38 WrapperNode [2020-10-29 03:30:38,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:38,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:30:38,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:30:38,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:30:38,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... [2020-10-29 03:30:38,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:30:38,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:30:38,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:30:38,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:30:38,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:30:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:30:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:30:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:30:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:30:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:30:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:30:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:30:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:30:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:30:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:30:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:30:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:30:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:30:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:30:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:30:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:30:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:30:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:30:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:30:39,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:30:39,850 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-29 03:30:39,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:39 BoogieIcfgContainer [2020-10-29 03:30:39,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:30:39,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:30:39,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:30:39,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:30:39,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:30:38" (1/3) ... [2020-10-29 03:30:39,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e284430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:39, skipping insertion in model container [2020-10-29 03:30:39,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:38" (2/3) ... [2020-10-29 03:30:39,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e284430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:39, skipping insertion in model container [2020-10-29 03:30:39,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:39" (3/3) ... [2020-10-29 03:30:39,864 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-1.i [2020-10-29 03:30:39,877 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:30:39,883 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:30:39,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:30:39,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:30:39,938 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:30:39,938 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:30:39,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:30:39,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:30:39,938 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:30:39,938 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:30:39,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:30:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-29 03:30:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:39,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:39,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:39,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:39,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1006986874, now seen corresponding path program 1 times [2020-10-29 03:30:39,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611697961] [2020-10-29 03:30:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 03:30:40,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:30:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:40,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:30:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:40,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:30:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:40,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611697961] [2020-10-29 03:30:40,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:40,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:30:40,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134012018] [2020-10-29 03:30:40,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:30:40,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:40,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:30:40,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:40,449 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-10-29 03:30:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:40,615 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2020-10-29 03:30:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:30:40,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-29 03:30:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:40,627 INFO L225 Difference]: With dead ends: 89 [2020-10-29 03:30:40,627 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:30:40,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:30:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 03:30:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:30:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2020-10-29 03:30:40,682 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2020-10-29 03:30:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:40,683 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-10-29 03:30:40,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:30:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2020-10-29 03:30:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:40,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:40,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:40,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:30:40,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:40,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1889588042, now seen corresponding path program 1 times [2020-10-29 03:30:40,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:40,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225336055] [2020-10-29 03:30:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 03:30:40,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:30:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:41,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:30:41,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:41,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225336055] [2020-10-29 03:30:41,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:41,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:30:41,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687689887] [2020-10-29 03:30:41,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:30:41,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:30:41,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:41,116 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 4 states. [2020-10-29 03:30:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:41,253 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2020-10-29 03:30:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:30:41,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 03:30:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:41,255 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:30:41,255 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:30:41,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:30:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:30:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:30:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2020-10-29 03:30:41,268 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 18 [2020-10-29 03:30:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:41,269 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2020-10-29 03:30:41,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:30:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-10-29 03:30:41,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:30:41,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:41,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:41,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:30:41,271 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:41,271 INFO L82 PathProgramCache]: Analyzing trace with hash -888776724, now seen corresponding path program 1 times [2020-10-29 03:30:41,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:41,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242407078] [2020-10-29 03:30:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:30:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 03:30:41,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:30:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:30:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:41,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:41,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:30:41,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:41,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:41,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242407078] [2020-10-29 03:30:41,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:41,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:30:41,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189287349] [2020-10-29 03:30:41,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:30:41,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:41,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:30:41,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:41,564 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2020-10-29 03:30:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:41,787 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2020-10-29 03:30:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:30:41,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-29 03:30:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:41,789 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:30:41,789 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:30:41,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:30:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:30:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:30:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-29 03:30:41,811 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2020-10-29 03:30:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:41,811 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-29 03:30:41,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:30:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-29 03:30:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:30:41,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:41,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:41,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:30:41,814 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:41,815 INFO L82 PathProgramCache]: Analyzing trace with hash 572341262, now seen corresponding path program 2 times [2020-10-29 03:30:41,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:41,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424302224] [2020-10-29 03:30:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:30:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-29 03:30:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:30:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:30:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:30:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:42,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424302224] [2020-10-29 03:30:42,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:42,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:30:42,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009663914] [2020-10-29 03:30:42,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:30:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:30:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:42,274 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2020-10-29 03:30:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:42,462 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2020-10-29 03:30:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:30:42,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 03:30:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:42,463 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:30:42,463 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:30:42,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:30:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:30:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:30:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-29 03:30:42,477 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 22 [2020-10-29 03:30:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:42,477 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-29 03:30:42,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:30:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-29 03:30:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:30:42,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:42,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:42,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:30:42,479 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:42,480 INFO L82 PathProgramCache]: Analyzing trace with hash 252420016, now seen corresponding path program 3 times [2020-10-29 03:30:42,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:42,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429343712] [2020-10-29 03:30:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:30:42,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 03:30:42,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:30:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:30:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:42,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429343712] [2020-10-29 03:30:42,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:42,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:30:42,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116623579] [2020-10-29 03:30:42,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:30:42,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:30:42,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:42,801 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 7 states. [2020-10-29 03:30:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:42,941 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2020-10-29 03:30:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:30:42,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-29 03:30:42,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:42,943 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:30:42,943 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:30:42,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:30:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:30:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:30:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2020-10-29 03:30:42,952 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 24 [2020-10-29 03:30:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:42,953 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2020-10-29 03:30:42,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:30:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2020-10-29 03:30:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:30:42,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:42,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:42,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:30:42,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:42,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2045747922, now seen corresponding path program 4 times [2020-10-29 03:30:42,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:42,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104152880] [2020-10-29 03:30:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:30:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 03:30:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:30:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:30:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:43,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:43,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104152880] [2020-10-29 03:30:43,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:43,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:30:43,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642251599] [2020-10-29 03:30:43,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:30:43,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:30:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:43,311 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 8 states. [2020-10-29 03:30:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:43,452 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2020-10-29 03:30:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:30:43,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-29 03:30:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:43,454 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:30:43,454 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:30:43,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:30:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:30:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:30:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-29 03:30:43,463 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 26 [2020-10-29 03:30:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:43,463 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-29 03:30:43,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:30:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-29 03:30:43,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:30:43,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:43,464 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:43,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:30:43,465 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:43,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1142987404, now seen corresponding path program 5 times [2020-10-29 03:30:43,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:43,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441705322] [2020-10-29 03:30:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:30:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-29 03:30:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:30:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:43,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:43,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:43,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:43,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:43,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:43,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441705322] [2020-10-29 03:30:43,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:43,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:30:43,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545544969] [2020-10-29 03:30:43,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:30:43,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:30:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:43,923 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 9 states. [2020-10-29 03:30:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:44,065 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-10-29 03:30:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:30:44,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 03:30:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:44,066 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:30:44,066 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:30:44,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:30:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:30:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:30:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-29 03:30:44,075 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 28 [2020-10-29 03:30:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:44,076 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-29 03:30:44,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:30:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-29 03:30:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:30:44,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:44,077 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:44,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:30:44,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1089013654, now seen corresponding path program 6 times [2020-10-29 03:30:44,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:44,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99773390] [2020-10-29 03:30:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:44,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:30:44,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-29 03:30:44,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:44,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:30:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:30:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:44,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:44,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:44,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:44,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:44,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:44,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99773390] [2020-10-29 03:30:44,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:44,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:30:44,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428466551] [2020-10-29 03:30:44,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:30:44,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:30:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:44,576 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 10 states. [2020-10-29 03:30:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:44,735 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2020-10-29 03:30:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:30:44,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-29 03:30:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:44,737 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:30:44,737 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:30:44,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:30:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:30:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:30:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-29 03:30:44,745 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 30 [2020-10-29 03:30:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:44,745 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-29 03:30:44,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:30:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-29 03:30:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:30:44,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:44,747 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:44,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:30:44,747 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1441617608, now seen corresponding path program 7 times [2020-10-29 03:30:44,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:44,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593577552] [2020-10-29 03:30:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:30:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-29 03:30:45,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:30:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:30:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:45,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:45,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593577552] [2020-10-29 03:30:45,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:45,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:30:45,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043343587] [2020-10-29 03:30:45,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:30:45,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:45,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:30:45,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:45,382 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 11 states. [2020-10-29 03:30:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:45,554 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2020-10-29 03:30:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:30:45,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 03:30:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:45,556 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:30:45,556 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:30:45,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:30:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:30:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:30:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-29 03:30:45,563 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 32 [2020-10-29 03:30:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:45,563 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-29 03:30:45,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:30:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-29 03:30:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:30:45,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:45,565 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:45,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:30:45,565 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:45,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:45,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1868196442, now seen corresponding path program 8 times [2020-10-29 03:30:45,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:45,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212611409] [2020-10-29 03:30:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:30:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-29 03:30:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:30:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:46,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:46,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:46,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:46,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:46,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:46,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212611409] [2020-10-29 03:30:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:46,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018139869] [2020-10-29 03:30:46,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:46,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:46,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:46,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:46,301 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 12 states. [2020-10-29 03:30:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:46,483 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2020-10-29 03:30:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:30:46,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 03:30:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:46,485 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:30:46,485 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:30:46,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:30:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:30:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:30:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-29 03:30:46,497 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 34 [2020-10-29 03:30:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:46,500 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-29 03:30:46,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-29 03:30:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:30:46,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:46,502 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:46,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:30:46,502 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash 28732156, now seen corresponding path program 9 times [2020-10-29 03:30:46,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:46,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779091496] [2020-10-29 03:30:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:30:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-29 03:30:47,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:30:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:30:47,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:47,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:47,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779091496] [2020-10-29 03:30:47,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:47,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:30:47,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003482170] [2020-10-29 03:30:47,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:30:47,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:47,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:30:47,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:47,462 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 13 states. [2020-10-29 03:30:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:47,698 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-29 03:30:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:47,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-29 03:30:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:47,701 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:30:47,701 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:30:47,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:30:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:30:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:30:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-29 03:30:47,722 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 36 [2020-10-29 03:30:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:47,723 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-29 03:30:47,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:30:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-29 03:30:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:30:47,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:47,727 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:47,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:30:47,727 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1830079262, now seen corresponding path program 10 times [2020-10-29 03:30:47,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:47,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366105024] [2020-10-29 03:30:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:30:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-29 03:30:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:30:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:30:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:48,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:48,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366105024] [2020-10-29 03:30:48,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:48,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:30:48,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093871711] [2020-10-29 03:30:48,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:30:48,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:30:48,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:48,801 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 14 states. [2020-10-29 03:30:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:49,010 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2020-10-29 03:30:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:49,010 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:30:49,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:49,011 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:30:49,012 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:30:49,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:30:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:30:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:30:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-29 03:30:49,020 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 38 [2020-10-29 03:30:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:49,021 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-29 03:30:49,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:30:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-29 03:30:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:30:49,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:49,022 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:49,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:30:49,023 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2052827840, now seen corresponding path program 11 times [2020-10-29 03:30:49,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:49,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871603340] [2020-10-29 03:30:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:30:50,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:50,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-29 03:30:50,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:30:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:30:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:50,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:50,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871603340] [2020-10-29 03:30:50,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:50,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:30:50,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067333451] [2020-10-29 03:30:50,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:30:50,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:50,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:30:50,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:50,279 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 15 states. [2020-10-29 03:30:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:50,501 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2020-10-29 03:30:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:30:50,502 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-29 03:30:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:50,503 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:30:50,503 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:30:50,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:30:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:30:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:30:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-10-29 03:30:50,513 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 40 [2020-10-29 03:30:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:50,514 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-10-29 03:30:50,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:30:50,514 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-10-29 03:30:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:30:50,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:50,515 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:50,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:30:50,515 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:50,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1365846498, now seen corresponding path program 12 times [2020-10-29 03:30:50,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:50,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387346809] [2020-10-29 03:30:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:30:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-10-29 03:30:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:30:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:30:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:51,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:51,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387346809] [2020-10-29 03:30:51,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:51,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:30:51,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117428330] [2020-10-29 03:30:51,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:30:51,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:51,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:30:51,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:51,816 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 16 states. [2020-10-29 03:30:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:52,044 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2020-10-29 03:30:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:30:52,045 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-29 03:30:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:52,046 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:30:52,046 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:30:52,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:30:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:30:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:30:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2020-10-29 03:30:52,052 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 42 [2020-10-29 03:30:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:52,052 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2020-10-29 03:30:52,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:30:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-10-29 03:30:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:30:52,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:52,054 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:52,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:30:52,054 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1693226876, now seen corresponding path program 13 times [2020-10-29 03:30:52,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:52,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54067160] [2020-10-29 03:30:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:30:53,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-10-29 03:30:53,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:30:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:30:53,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:53,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:53,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:53,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54067160] [2020-10-29 03:30:53,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:53,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:30:53,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337503595] [2020-10-29 03:30:53,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:30:53,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:53,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:30:53,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:53,633 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 17 states. [2020-10-29 03:30:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:53,945 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2020-10-29 03:30:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:30:53,946 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-29 03:30:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:53,948 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:30:53,948 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:30:53,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:30:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:30:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:30:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-10-29 03:30:53,957 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 44 [2020-10-29 03:30:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:53,957 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-10-29 03:30:53,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:30:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-10-29 03:30:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:30:53,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:53,959 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:53,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:30:53,959 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash 589858470, now seen corresponding path program 14 times [2020-10-29 03:30:53,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:53,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290992836] [2020-10-29 03:30:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:30:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1483 [2020-10-29 03:30:55,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:30:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:30:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:55,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:55,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:55,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290992836] [2020-10-29 03:30:55,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:55,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:30:55,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663267742] [2020-10-29 03:30:55,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:30:55,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:55,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:30:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:55,721 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 18 states. [2020-10-29 03:30:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:55,975 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2020-10-29 03:30:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:30:55,976 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-29 03:30:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:55,977 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:30:55,977 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:30:55,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:30:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:30:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:30:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-29 03:30:55,985 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 46 [2020-10-29 03:30:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:55,987 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-29 03:30:55,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:30:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-29 03:30:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:30:55,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:55,988 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:55,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:30:55,988 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:55,989 INFO L82 PathProgramCache]: Analyzing trace with hash -93412280, now seen corresponding path program 15 times [2020-10-29 03:30:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:55,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144288497] [2020-10-29 03:30:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:30:57,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-10-29 03:30:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:57,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:30:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:30:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:57,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:57,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:57,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:57,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:57,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144288497] [2020-10-29 03:30:57,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:57,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:30:57,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572505689] [2020-10-29 03:30:57,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:30:57,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:57,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:30:57,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:57,871 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 19 states. [2020-10-29 03:30:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:58,144 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2020-10-29 03:30:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:30:58,144 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-29 03:30:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:58,145 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:30:58,145 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:30:58,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:30:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:30:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:30:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-29 03:30:58,156 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 48 [2020-10-29 03:30:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:58,157 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-29 03:30:58,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:30:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-29 03:30:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:30:58,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:58,158 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:58,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:30:58,158 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash 413393258, now seen corresponding path program 16 times [2020-10-29 03:30:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:58,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922992049] [2020-10-29 03:30:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:59,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:30:59,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-29 03:30:59,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:59,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:30:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:30:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:00,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:00,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922992049] [2020-10-29 03:31:00,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:00,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:31:00,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176886485] [2020-10-29 03:31:00,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:31:00,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:31:00,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:31:00,172 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 20 states. [2020-10-29 03:31:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:00,426 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2020-10-29 03:31:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:31:00,427 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-29 03:31:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:00,429 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:31:00,429 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:31:00,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:31:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:31:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:31:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:31:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-29 03:31:00,436 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 50 [2020-10-29 03:31:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:00,436 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-29 03:31:00,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:31:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-29 03:31:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:31:00,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:00,437 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:00,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:31:00,437 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:00,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2122210828, now seen corresponding path program 17 times [2020-10-29 03:31:00,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:00,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088994794] [2020-10-29 03:31:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:31:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-29 03:31:02,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:02,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:31:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:31:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:02,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:02,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:02,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:02,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088994794] [2020-10-29 03:31:02,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:02,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:31:02,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225385156] [2020-10-29 03:31:02,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:31:02,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:02,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:31:02,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:02,442 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 21 states. [2020-10-29 03:31:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:02,621 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-10-29 03:31:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:31:02,622 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-29 03:31:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:02,623 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:31:02,623 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:31:02,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:31:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:31:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:31:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-10-29 03:31:02,633 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 52 [2020-10-29 03:31:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:02,633 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-10-29 03:31:02,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:31:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-10-29 03:31:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:31:02,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:02,634 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:02,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:31:02,635 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:02,635 INFO L82 PathProgramCache]: Analyzing trace with hash -676578770, now seen corresponding path program 18 times [2020-10-29 03:31:02,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:02,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452983105] [2020-10-29 03:31:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:31:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-10-29 03:31:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:04,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:31:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:31:04,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:04,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:04,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:04,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:04,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:04,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452983105] [2020-10-29 03:31:04,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:04,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:31:04,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927647975] [2020-10-29 03:31:04,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:31:04,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:04,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:31:04,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:04,858 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 22 states. [2020-10-29 03:31:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:05,105 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2020-10-29 03:31:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:31:05,108 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-29 03:31:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:05,109 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:31:05,109 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:31:05,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:31:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:31:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:31:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-10-29 03:31:05,119 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 54 [2020-10-29 03:31:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:05,120 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-10-29 03:31:05,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:31:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-10-29 03:31:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:31:05,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:05,121 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:05,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:31:05,123 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:05,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1663855152, now seen corresponding path program 19 times [2020-10-29 03:31:05,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:05,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353243118] [2020-10-29 03:31:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:31:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1998 [2020-10-29 03:31:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:07,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:31:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:31:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:07,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:07,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353243118] [2020-10-29 03:31:07,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:07,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:31:07,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064483043] [2020-10-29 03:31:07,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:31:07,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:07,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:31:07,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:07,550 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 23 states. [2020-10-29 03:31:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:07,822 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2020-10-29 03:31:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:31:07,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-29 03:31:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:07,831 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:31:07,831 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:31:07,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:31:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:31:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:31:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-10-29 03:31:07,838 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 56 [2020-10-29 03:31:07,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:07,839 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-10-29 03:31:07,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:31:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-10-29 03:31:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:31:07,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:07,844 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:07,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:31:07,844 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1248685838, now seen corresponding path program 20 times [2020-10-29 03:31:07,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:07,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853821114] [2020-10-29 03:31:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:09,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:09,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:31:09,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1987 [2020-10-29 03:31:09,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:09,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:31:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:31:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:10,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:10,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:10,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853821114] [2020-10-29 03:31:10,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:10,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:31:10,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053570378] [2020-10-29 03:31:10,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:31:10,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:10,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:31:10,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:10,302 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 24 states. [2020-10-29 03:31:10,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:10,689 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2020-10-29 03:31:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:31:10,693 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2020-10-29 03:31:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:10,694 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:31:10,694 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:31:10,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:31:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:31:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:31:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-29 03:31:10,710 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 58 [2020-10-29 03:31:10,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:10,710 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-29 03:31:10,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:31:10,711 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-29 03:31:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:31:10,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:10,716 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:10,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:31:10,717 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:10,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1702933612, now seen corresponding path program 21 times [2020-10-29 03:31:10,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:10,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043709220] [2020-10-29 03:31:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:31:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-29 03:31:12,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:12,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:31:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:31:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:13,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:13,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043709220] [2020-10-29 03:31:13,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:13,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:31:13,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515996407] [2020-10-29 03:31:13,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:31:13,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:13,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:31:13,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:13,533 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 25 states. [2020-10-29 03:31:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:13,837 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2020-10-29 03:31:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:31:13,837 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-10-29 03:31:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:13,838 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:31:13,839 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:31:13,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:31:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:31:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:31:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-10-29 03:31:13,846 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 60 [2020-10-29 03:31:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:13,846 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-10-29 03:31:13,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:31:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-10-29 03:31:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:31:13,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:13,848 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:13,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:31:13,848 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:13,849 INFO L82 PathProgramCache]: Analyzing trace with hash -148380234, now seen corresponding path program 22 times [2020-10-29 03:31:13,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:13,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604347316] [2020-10-29 03:31:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:31:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1905 [2020-10-29 03:31:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:15,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:31:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:16,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:16,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604347316] [2020-10-29 03:31:16,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:16,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:31:16,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587345478] [2020-10-29 03:31:16,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:31:16,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:16,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:31:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:16,382 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 26 states. [2020-10-29 03:31:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:16,737 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2020-10-29 03:31:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:31:16,737 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2020-10-29 03:31:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:16,738 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:31:16,739 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:31:16,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:31:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:31:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:31:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2020-10-29 03:31:16,745 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 62 [2020-10-29 03:31:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:16,745 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2020-10-29 03:31:16,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:31:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2020-10-29 03:31:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:31:16,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:16,747 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:16,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:31:16,749 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:16,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:16,750 INFO L82 PathProgramCache]: Analyzing trace with hash -871202984, now seen corresponding path program 23 times [2020-10-29 03:31:16,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:16,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140440735] [2020-10-29 03:31:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:31:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-10-29 03:31:18,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:31:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:31:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:19,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:19,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:19,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:19,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140440735] [2020-10-29 03:31:19,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:19,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:31:19,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132159856] [2020-10-29 03:31:19,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:31:19,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:31:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:19,247 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand 27 states. [2020-10-29 03:31:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:19,498 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2020-10-29 03:31:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:31:19,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-29 03:31:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:19,508 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:31:19,508 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:31:19,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:31:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:31:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:31:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-29 03:31:19,515 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 64 [2020-10-29 03:31:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:19,515 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-29 03:31:19,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:31:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-29 03:31:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:31:19,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:19,516 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:19,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:31:19,517 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash 280836218, now seen corresponding path program 24 times [2020-10-29 03:31:19,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:19,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597394972] [2020-10-29 03:31:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1926 [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:31:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:31:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:21,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:21,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:21,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:21,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:21,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:21,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597394972] [2020-10-29 03:31:21,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:21,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:31:21,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288347337] [2020-10-29 03:31:21,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:31:21,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:21,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:31:21,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:21,988 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 28 states. [2020-10-29 03:31:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:22,309 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-10-29 03:31:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:31:22,309 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2020-10-29 03:31:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:22,310 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:31:22,310 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:31:22,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:31:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 03:31:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:31:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2020-10-29 03:31:22,316 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 66 [2020-10-29 03:31:22,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:22,317 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2020-10-29 03:31:22,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:31:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2020-10-29 03:31:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:31:22,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:22,318 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:22,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:31:22,318 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:22,319 INFO L82 PathProgramCache]: Analyzing trace with hash -711053028, now seen corresponding path program 25 times [2020-10-29 03:31:22,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:22,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269359520] [2020-10-29 03:31:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2079 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:31:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:25,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:25,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:25,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:25,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:25,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:25,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:25,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269359520] [2020-10-29 03:31:25,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:25,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:31:25,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219491770] [2020-10-29 03:31:25,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:31:25,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:25,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:31:25,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:25,044 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 29 states. [2020-10-29 03:31:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:25,388 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2020-10-29 03:31:25,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:31:25,389 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2020-10-29 03:31:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:25,390 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:31:25,390 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:31:25,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:31:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-29 03:31:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:31:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-10-29 03:31:25,396 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 68 [2020-10-29 03:31:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:25,397 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-10-29 03:31:25,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:31:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-10-29 03:31:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:31:25,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:25,398 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:25,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:31:25,398 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash -433878722, now seen corresponding path program 26 times [2020-10-29 03:31:25,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:25,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918268572] [2020-10-29 03:31:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:27,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:27,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:31:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2437 [2020-10-29 03:31:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:27,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:31:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:31:27,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:28,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:28,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:28,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918268572] [2020-10-29 03:31:28,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:28,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:31:28,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145676670] [2020-10-29 03:31:28,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:31:28,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:31:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:28,482 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 30 states. [2020-10-29 03:31:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:28,860 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-10-29 03:31:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:31:28,860 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-29 03:31:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:28,861 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:31:28,862 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:31:28,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:31:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-29 03:31:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:31:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-10-29 03:31:28,872 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 70 [2020-10-29 03:31:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:28,873 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-10-29 03:31:28,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:31:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-10-29 03:31:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:31:28,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:28,874 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:28,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:31:28,874 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash -357343008, now seen corresponding path program 27 times [2020-10-29 03:31:28,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:28,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114992216] [2020-10-29 03:31:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:31,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:31,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:31:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-29 03:31:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:31,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:31:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:31:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:32,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:32,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:32,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:32,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:32,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:32,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114992216] [2020-10-29 03:31:32,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:32,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:31:32,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374459837] [2020-10-29 03:31:32,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:31:32,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:32,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:31:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:32,052 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 31 states. [2020-10-29 03:31:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:32,337 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2020-10-29 03:31:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:31:32,338 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2020-10-29 03:31:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:32,339 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:31:32,339 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:31:32,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:31:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-29 03:31:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 03:31:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-10-29 03:31:32,346 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 72 [2020-10-29 03:31:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:32,346 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-10-29 03:31:32,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:31:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-10-29 03:31:32,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:31:32,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:32,348 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:32,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:31:32,348 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:32,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:32,348 INFO L82 PathProgramCache]: Analyzing trace with hash 179034114, now seen corresponding path program 28 times [2020-10-29 03:31:32,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:32,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214929018] [2020-10-29 03:31:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:34,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:34,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:31:34,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2628 [2020-10-29 03:31:34,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:34,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:31:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:31:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:35,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:35,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:35,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:35,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214929018] [2020-10-29 03:31:35,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:35,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:31:35,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612859169] [2020-10-29 03:31:35,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:31:35,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:35,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:31:35,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:35,713 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 32 states. [2020-10-29 03:31:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:36,072 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2020-10-29 03:31:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:31:36,073 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2020-10-29 03:31:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:36,076 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:31:36,077 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:31:36,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:31:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-29 03:31:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:31:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2020-10-29 03:31:36,090 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 74 [2020-10-29 03:31:36,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:36,092 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2020-10-29 03:31:36,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:31:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2020-10-29 03:31:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:31:36,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:36,093 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:36,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:31:36,094 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash 241372836, now seen corresponding path program 29 times [2020-10-29 03:31:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:36,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407859207] [2020-10-29 03:31:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:39,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:39,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:31:39,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-10-29 03:31:39,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:39,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:31:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:31:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:39,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:39,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:39,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407859207] [2020-10-29 03:31:39,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:39,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:31:39,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404015680] [2020-10-29 03:31:39,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:31:39,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:31:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:39,750 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 33 states. [2020-10-29 03:31:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:40,141 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2020-10-29 03:31:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:31:40,141 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2020-10-29 03:31:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:40,143 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:31:40,143 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:31:40,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:31:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-29 03:31:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:31:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-10-29 03:31:40,150 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 76 [2020-10-29 03:31:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:40,151 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-10-29 03:31:40,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:31:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-10-29 03:31:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:31:40,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:40,152 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:40,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:31:40,152 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 19342534, now seen corresponding path program 30 times [2020-10-29 03:31:40,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:40,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154583519] [2020-10-29 03:31:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:43,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:31:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:44,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:44,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:44,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154583519] [2020-10-29 03:31:44,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:44,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:31:44,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468939853] [2020-10-29 03:31:44,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:31:44,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:44,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:31:44,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:44,195 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 34 states. [2020-10-29 03:31:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:44,574 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-10-29 03:31:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:31:44,575 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2020-10-29 03:31:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:44,577 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:31:44,577 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:31:44,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:31:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-29 03:31:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:31:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-10-29 03:31:44,591 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 78 [2020-10-29 03:31:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:44,594 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-10-29 03:31:44,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:31:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-10-29 03:31:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:31:44,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:44,596 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:44,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:31:44,596 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1396587112, now seen corresponding path program 31 times [2020-10-29 03:31:44,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:44,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796904585] [2020-10-29 03:31:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:47,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3238 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:31:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:48,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:48,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:48,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:48,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:48,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:48,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:48,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796904585] [2020-10-29 03:31:48,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:48,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:31:48,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141468808] [2020-10-29 03:31:48,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:31:48,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:48,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:31:48,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:48,605 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 35 states. [2020-10-29 03:31:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:48,966 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2020-10-29 03:31:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:31:48,966 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2020-10-29 03:31:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:48,967 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:31:48,967 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:31:48,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:31:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-29 03:31:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:31:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-29 03:31:48,974 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 80 [2020-10-29 03:31:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:48,974 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-29 03:31:48,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:31:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-29 03:31:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:31:48,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:48,976 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:48,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:31:48,976 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2078699402, now seen corresponding path program 32 times [2020-10-29 03:31:48,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:48,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207173278] [2020-10-29 03:31:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:52,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3474 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:31:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:53,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207173278] [2020-10-29 03:31:53,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:53,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:31:53,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958746950] [2020-10-29 03:31:53,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:31:53,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:53,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:31:53,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:53,288 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 36 states. [2020-10-29 03:31:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:53,559 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2020-10-29 03:31:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:31:53,559 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2020-10-29 03:31:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:53,561 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:31:53,561 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:31:53,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:31:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-29 03:31:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:31:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-29 03:31:53,577 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 82 [2020-10-29 03:31:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:53,577 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-29 03:31:53,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:31:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-29 03:31:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:31:53,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:53,579 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:53,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:31:53,579 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:53,580 INFO L82 PathProgramCache]: Analyzing trace with hash 458613804, now seen corresponding path program 33 times [2020-10-29 03:31:53,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:53,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404509337] [2020-10-29 03:31:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3910 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:31:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:58,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:58,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:58,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:58,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:58,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404509337] [2020-10-29 03:31:58,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:58,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:31:58,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738993691] [2020-10-29 03:31:58,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:31:58,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:58,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:31:58,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:58,389 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 37 states. [2020-10-29 03:31:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:58,759 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2020-10-29 03:31:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:31:58,759 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2020-10-29 03:31:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:58,760 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:31:58,760 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:31:58,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:58,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:31:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-29 03:31:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:31:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-10-29 03:31:58,766 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 84 [2020-10-29 03:31:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:58,766 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-10-29 03:31:58,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:31:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-10-29 03:31:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:31:58,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:58,767 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:58,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:31:58,768 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1665484722, now seen corresponding path program 34 times [2020-10-29 03:31:58,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:58,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288504492] [2020-10-29 03:31:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:58,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:02,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:02,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:32:02,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4018 [2020-10-29 03:32:02,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:02,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:02,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:32:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:32:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:03,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:03,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:03,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288504492] [2020-10-29 03:32:03,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:03,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:32:03,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380078611] [2020-10-29 03:32:03,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:32:03,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:03,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:32:03,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:03,755 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 38 states. [2020-10-29 03:32:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:04,189 INFO L93 Difference]: Finished difference Result 146 states and 168 transitions. [2020-10-29 03:32:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:32:04,190 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2020-10-29 03:32:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:04,191 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:32:04,191 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:32:04,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:32:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-29 03:32:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:32:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2020-10-29 03:32:04,200 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 86 [2020-10-29 03:32:04,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:04,200 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2020-10-29 03:32:04,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:32:04,200 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2020-10-29 03:32:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:32:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:04,202 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:04,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:32:04,202 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1480264688, now seen corresponding path program 35 times [2020-10-29 03:32:04,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:04,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93026854] [2020-10-29 03:32:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:08,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:32:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:32:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:09,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:09,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:09,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:09,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93026854] [2020-10-29 03:32:09,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:09,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:32:09,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989039020] [2020-10-29 03:32:09,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:32:09,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:09,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:32:09,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:09,595 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 39 states. [2020-10-29 03:32:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:09,958 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-10-29 03:32:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:32:09,959 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2020-10-29 03:32:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:09,960 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:32:09,960 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:32:09,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:32:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-29 03:32:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:32:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-10-29 03:32:09,968 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 88 [2020-10-29 03:32:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:09,968 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-10-29 03:32:09,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:32:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-10-29 03:32:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:32:09,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:09,969 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:09,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:32:09,969 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:09,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:09,970 INFO L82 PathProgramCache]: Analyzing trace with hash 888471314, now seen corresponding path program 36 times [2020-10-29 03:32:09,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:09,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396270760] [2020-10-29 03:32:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:14,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:14,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:32:14,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:15,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:15,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:15,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396270760] [2020-10-29 03:32:15,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:15,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:32:15,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457062096] [2020-10-29 03:32:15,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:32:15,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:32:15,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:15,714 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 40 states. [2020-10-29 03:32:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:16,174 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-10-29 03:32:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:32:16,175 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2020-10-29 03:32:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:16,177 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:32:16,177 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:32:16,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:32:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-29 03:32:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:32:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-29 03:32:16,184 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 90 [2020-10-29 03:32:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:16,184 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-29 03:32:16,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:32:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-29 03:32:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:32:16,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:16,185 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:16,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:32:16,186 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:16,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:16,186 INFO L82 PathProgramCache]: Analyzing trace with hash -889278028, now seen corresponding path program 37 times [2020-10-29 03:32:16,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:16,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106891783] [2020-10-29 03:32:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:21,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:21,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:32:21,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:21,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-29 03:32:21,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:21,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:32:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:32:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:22,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106891783] [2020-10-29 03:32:22,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:22,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:32:22,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615802310] [2020-10-29 03:32:22,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:32:22,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:22,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:32:22,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:22,258 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 41 states. [2020-10-29 03:32:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:22,710 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2020-10-29 03:32:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:32:22,711 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2020-10-29 03:32:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:22,712 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:32:22,712 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:32:22,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:32:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-29 03:32:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:32:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-10-29 03:32:22,719 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 92 [2020-10-29 03:32:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:22,719 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-10-29 03:32:22,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:32:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-10-29 03:32:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:32:22,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:22,720 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:22,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:32:22,721 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:22,721 INFO L82 PathProgramCache]: Analyzing trace with hash 90588118, now seen corresponding path program 38 times [2020-10-29 03:32:22,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:22,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777310006] [2020-10-29 03:32:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:27,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:27,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:32:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:32:27,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:27,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:32:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:32:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:28,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:28,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:28,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:28,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777310006] [2020-10-29 03:32:28,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:28,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:32:28,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376802675] [2020-10-29 03:32:28,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:32:28,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:28,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:32:28,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:28,949 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 42 states. [2020-10-29 03:32:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:29,427 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2020-10-29 03:32:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:32:29,428 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2020-10-29 03:32:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:29,429 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:32:29,429 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:32:29,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:32:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-29 03:32:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:32:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2020-10-29 03:32:29,436 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 94 [2020-10-29 03:32:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:29,437 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2020-10-29 03:32:29,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:32:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2020-10-29 03:32:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:32:29,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:29,438 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:29,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:32:29,438 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:29,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:29,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1144116600, now seen corresponding path program 39 times [2020-10-29 03:32:29,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:29,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609379630] [2020-10-29 03:32:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:29,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:34,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:32:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:32:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:34,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:32:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:32:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:35,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:35,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:35,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609379630] [2020-10-29 03:32:35,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:35,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:32:35,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013013003] [2020-10-29 03:32:35,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:32:35,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:32:35,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:35,722 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand 43 states. [2020-10-29 03:32:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:36,181 INFO L93 Difference]: Finished difference Result 156 states and 178 transitions. [2020-10-29 03:32:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:32:36,182 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2020-10-29 03:32:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:36,183 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:32:36,183 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:32:36,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:32:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-29 03:32:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 03:32:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-29 03:32:36,191 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 96 [2020-10-29 03:32:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:36,191 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-29 03:32:36,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:32:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-29 03:32:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:32:36,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:36,192 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:36,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:32:36,193 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:36,193 INFO L82 PathProgramCache]: Analyzing trace with hash -27294054, now seen corresponding path program 40 times [2020-10-29 03:32:36,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:36,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718293722] [2020-10-29 03:32:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:41,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:41,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:32:41,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:32:41,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:41,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:32:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:32:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:42,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718293722] [2020-10-29 03:32:42,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:42,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:32:42,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042055311] [2020-10-29 03:32:42,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:32:42,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:42,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:32:42,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:42,549 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 44 states. [2020-10-29 03:32:43,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:43,052 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2020-10-29 03:32:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:32:43,053 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2020-10-29 03:32:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:43,054 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:32:43,054 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:32:43,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:32:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-29 03:32:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:32:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2020-10-29 03:32:43,061 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 98 [2020-10-29 03:32:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:43,062 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2020-10-29 03:32:43,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:32:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2020-10-29 03:32:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:32:43,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:43,063 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:43,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:32:43,063 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:43,064 INFO L82 PathProgramCache]: Analyzing trace with hash -471500996, now seen corresponding path program 41 times [2020-10-29 03:32:43,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:43,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852508598] [2020-10-29 03:32:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:48,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:48,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:32:48,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:32:48,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:48,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:32:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 03:32:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:49,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:49,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:49,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:49,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852508598] [2020-10-29 03:32:49,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:49,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:32:49,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038258719] [2020-10-29 03:32:49,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:32:49,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:49,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:32:49,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:49,416 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 45 states. [2020-10-29 03:32:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:49,946 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-29 03:32:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:32:49,947 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2020-10-29 03:32:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:49,948 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:32:49,948 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:32:49,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:32:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-29 03:32:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:32:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2020-10-29 03:32:49,962 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 100 [2020-10-29 03:32:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:49,962 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2020-10-29 03:32:49,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:32:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2020-10-29 03:32:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:32:49,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:49,963 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:49,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:32:49,963 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2142357342, now seen corresponding path program 42 times [2020-10-29 03:32:49,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:49,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813872450] [2020-10-29 03:32:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:55,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:55,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 03:32:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:32:55,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:55,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:32:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:32:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:56,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:56,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:56,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:56,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813872450] [2020-10-29 03:32:56,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:56,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:32:56,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279273787] [2020-10-29 03:32:56,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:32:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:56,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:32:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:56,373 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand 46 states. [2020-10-29 03:32:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:56,687 INFO L93 Difference]: Finished difference Result 162 states and 184 transitions. [2020-10-29 03:32:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:32:56,688 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2020-10-29 03:32:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:56,689 INFO L225 Difference]: With dead ends: 162 [2020-10-29 03:32:56,689 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:32:56,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:32:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-29 03:32:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 03:32:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2020-10-29 03:32:56,697 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 102 [2020-10-29 03:32:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:56,697 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2020-10-29 03:32:56,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:32:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2020-10-29 03:32:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:32:56,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:56,698 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:56,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:32:56,698 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:56,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:56,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1504352000, now seen corresponding path program 43 times [2020-10-29 03:32:56,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:56,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527182984] [2020-10-29 03:32:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:01,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 03:33:01,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:03,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527182984] [2020-10-29 03:33:03,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:03,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:33:03,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788358844] [2020-10-29 03:33:03,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:33:03,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:33:03,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:33:03,242 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand 47 states. [2020-10-29 03:33:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:03,708 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2020-10-29 03:33:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:33:03,708 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2020-10-29 03:33:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:03,710 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:33:03,710 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:33:03,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:33:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:33:03,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-29 03:33:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:33:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2020-10-29 03:33:03,717 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 104 [2020-10-29 03:33:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:03,717 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2020-10-29 03:33:03,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:33:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2020-10-29 03:33:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:33:03,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:03,718 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:03,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:33:03,719 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:03,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:03,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1733425630, now seen corresponding path program 44 times [2020-10-29 03:33:03,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:03,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470555590] [2020-10-29 03:33:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:08,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:08,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:33:08,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:33:08,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:08,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:33:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:33:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:10,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:10,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:10,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:10,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:10,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470555590] [2020-10-29 03:33:10,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:10,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:33:10,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315274225] [2020-10-29 03:33:10,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:33:10,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:10,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:33:10,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:10,323 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand 48 states. [2020-10-29 03:33:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:10,604 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-10-29 03:33:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:33:10,605 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2020-10-29 03:33:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:10,606 INFO L225 Difference]: With dead ends: 166 [2020-10-29 03:33:10,606 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:33:10,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:33:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-29 03:33:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:33:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2020-10-29 03:33:10,616 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 106 [2020-10-29 03:33:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:10,617 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2020-10-29 03:33:10,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:33:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2020-10-29 03:33:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 03:33:10,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:10,622 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:10,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:33:10,622 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:10,622 INFO L82 PathProgramCache]: Analyzing trace with hash 613561540, now seen corresponding path program 45 times [2020-10-29 03:33:10,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:10,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719474213] [2020-10-29 03:33:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:10,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:15,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:15,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:33:15,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:33:15,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:15,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:33:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:15,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:33:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:17,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719474213] [2020-10-29 03:33:17,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:17,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:33:17,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776631723] [2020-10-29 03:33:17,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:33:17,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:17,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:33:17,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:17,202 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand 49 states. [2020-10-29 03:33:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:17,758 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2020-10-29 03:33:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:33:17,759 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2020-10-29 03:33:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:17,761 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:33:17,761 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:33:17,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:33:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-29 03:33:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:33:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-29 03:33:17,768 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 108 [2020-10-29 03:33:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:17,769 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-29 03:33:17,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:33:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-29 03:33:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 03:33:17,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:17,774 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:17,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:33:17,774 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1210401510, now seen corresponding path program 46 times [2020-10-29 03:33:17,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:17,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650427628] [2020-10-29 03:33:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:22,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:22,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:33:22,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:33:22,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:22,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:33:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 03:33:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:24,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650427628] [2020-10-29 03:33:24,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:24,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:33:24,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632049621] [2020-10-29 03:33:24,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:33:24,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:24,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:33:24,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:24,423 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 50 states. [2020-10-29 03:33:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:24,858 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-10-29 03:33:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:33:24,859 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2020-10-29 03:33:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:24,860 INFO L225 Difference]: With dead ends: 170 [2020-10-29 03:33:24,860 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 03:33:24,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 03:33:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-29 03:33:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:33:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-29 03:33:24,877 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 110 [2020-10-29 03:33:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:24,879 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-29 03:33:24,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:33:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-29 03:33:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:33:24,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:24,881 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:24,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:33:24,882 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash -752004984, now seen corresponding path program 47 times [2020-10-29 03:33:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:24,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863580008] [2020-10-29 03:33:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:29,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:33:29,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:29,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:33:29,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:29,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 03:33:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 03:33:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:31,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:31,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863580008] [2020-10-29 03:33:31,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:31,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 03:33:31,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651352767] [2020-10-29 03:33:31,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 03:33:31,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 03:33:31,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:31,711 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 51 states. [2020-10-29 03:33:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:32,095 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2020-10-29 03:33:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 03:33:32,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2020-10-29 03:33:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:32,097 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:33:32,097 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:33:32,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:33:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-29 03:33:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:33:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2020-10-29 03:33:32,105 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 112 [2020-10-29 03:33:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:32,106 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2020-10-29 03:33:32,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 03:33:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2020-10-29 03:33:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 03:33:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:32,107 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:32,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:33:32,107 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1134002774, now seen corresponding path program 48 times [2020-10-29 03:33:32,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:32,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738854377] [2020-10-29 03:33:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:37,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 03:33:37,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:33:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:37,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:33:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:33:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:38,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:38,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:38,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-29 03:33:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:39,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738854377] [2020-10-29 03:33:39,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:39,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:33:39,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548294788] [2020-10-29 03:33:39,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:33:39,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:39,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:33:39,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:39,021 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 52 states. [2020-10-29 03:33:39,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:39,388 INFO L93 Difference]: Finished difference Result 174 states and 196 transitions. [2020-10-29 03:33:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:33:39,388 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2020-10-29 03:33:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:39,390 INFO L225 Difference]: With dead ends: 174 [2020-10-29 03:33:39,390 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:33:39,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:33:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-29 03:33:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-29 03:33:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-10-29 03:33:39,396 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 114 [2020-10-29 03:33:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:39,397 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-10-29 03:33:39,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:33:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-10-29 03:33:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:33:39,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:39,398 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:39,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:33:39,398 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1133308492, now seen corresponding path program 49 times [2020-10-29 03:33:39,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:39,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250480086] [2020-10-29 03:33:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:33:44,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:44,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 03:33:44,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:44,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 03:33:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 03:33:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:46,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250480086] [2020-10-29 03:33:46,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:46,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 03:33:46,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682160410] [2020-10-29 03:33:46,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 03:33:46,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:46,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 03:33:46,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:46,352 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 53 states. [2020-10-29 03:33:46,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:46,758 INFO L93 Difference]: Finished difference Result 176 states and 198 transitions. [2020-10-29 03:33:46,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:33:46,759 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2020-10-29 03:33:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:46,760 INFO L225 Difference]: With dead ends: 176 [2020-10-29 03:33:46,760 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:33:46,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:33:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-29 03:33:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 03:33:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2020-10-29 03:33:46,767 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 116 [2020-10-29 03:33:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:46,767 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2020-10-29 03:33:46,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 03:33:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2020-10-29 03:33:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:33:46,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:46,768 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:46,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:33:46,769 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1823951250, now seen corresponding path program 50 times [2020-10-29 03:33:46,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:46,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354445144] [2020-10-29 03:33:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:51,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:51,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:33:51,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:53,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:53,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:53,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:53,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:53,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:53,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:53,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354445144] [2020-10-29 03:33:53,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:53,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:33:53,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988027901] [2020-10-29 03:33:53,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:33:53,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:53,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:33:53,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:53,715 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand 54 states. [2020-10-29 03:33:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:54,169 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2020-10-29 03:33:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:33:54,170 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2020-10-29 03:33:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:54,172 INFO L225 Difference]: With dead ends: 178 [2020-10-29 03:33:54,172 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:33:54,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:33:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-29 03:33:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:33:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2020-10-29 03:33:54,179 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 118 [2020-10-29 03:33:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:54,180 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2020-10-29 03:33:54,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:33:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2020-10-29 03:33:54,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:33:54,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:54,181 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:54,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:33:54,181 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:54,182 INFO L82 PathProgramCache]: Analyzing trace with hash -482213360, now seen corresponding path program 51 times [2020-10-29 03:33:54,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:54,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797659549] [2020-10-29 03:33:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:59,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:59,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 03:33:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:01,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:01,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797659549] [2020-10-29 03:34:01,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:01,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 03:34:01,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673461190] [2020-10-29 03:34:01,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 03:34:01,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:01,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 03:34:01,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:34:01,259 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand 55 states. [2020-10-29 03:34:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:01,819 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2020-10-29 03:34:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 03:34:01,820 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2020-10-29 03:34:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:01,822 INFO L225 Difference]: With dead ends: 180 [2020-10-29 03:34:01,822 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:34:01,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:34:01,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:34:01,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-29 03:34:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-29 03:34:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-10-29 03:34:01,830 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 120 [2020-10-29 03:34:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:01,831 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-10-29 03:34:01,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 03:34:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-10-29 03:34:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:34:01,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:01,832 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:01,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 03:34:01,832 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash 437710130, now seen corresponding path program 52 times [2020-10-29 03:34:01,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:01,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045635460] [2020-10-29 03:34:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:06,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:34:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:09,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:09,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:09,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:09,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:09,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:09,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:09,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:09,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:09,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:09,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045635460] [2020-10-29 03:34:09,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:09,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:34:09,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387603216] [2020-10-29 03:34:09,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:34:09,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:09,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:34:09,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:09,028 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 56 states. [2020-10-29 03:34:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:09,655 INFO L93 Difference]: Finished difference Result 182 states and 204 transitions. [2020-10-29 03:34:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:34:09,656 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2020-10-29 03:34:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:09,657 INFO L225 Difference]: With dead ends: 182 [2020-10-29 03:34:09,657 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 03:34:09,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:09,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 03:34:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-29 03:34:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:34:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2020-10-29 03:34:09,665 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 122 [2020-10-29 03:34:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:09,666 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2020-10-29 03:34:09,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:34:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2020-10-29 03:34:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:34:09,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:09,667 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:09,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 03:34:09,667 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash -279078956, now seen corresponding path program 53 times [2020-10-29 03:34:09,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:09,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874053606] [2020-10-29 03:34:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:14,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:14,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:34:14,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:34:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:14,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:34:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:34:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:16,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:16,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:16,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874053606] [2020-10-29 03:34:16,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:16,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:34:16,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752410863] [2020-10-29 03:34:16,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:34:16,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:16,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:34:16,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:16,966 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 57 states. [2020-10-29 03:34:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:17,590 INFO L93 Difference]: Finished difference Result 184 states and 206 transitions. [2020-10-29 03:34:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:34:17,591 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2020-10-29 03:34:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:17,592 INFO L225 Difference]: With dead ends: 184 [2020-10-29 03:34:17,592 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 03:34:17,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 03:34:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-29 03:34:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:34:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2020-10-29 03:34:17,599 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 124 [2020-10-29 03:34:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:17,600 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2020-10-29 03:34:17,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:34:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2020-10-29 03:34:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 03:34:17,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:17,601 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:17,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 03:34:17,601 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:17,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:17,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1918623242, now seen corresponding path program 54 times [2020-10-29 03:34:17,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:17,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225060602] [2020-10-29 03:34:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:22,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:22,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 03:34:22,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:34:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:22,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 03:34:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 03:34:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:25,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:25,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:25,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225060602] [2020-10-29 03:34:25,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:25,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:34:25,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596860516] [2020-10-29 03:34:25,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:34:25,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:34:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:34:25,056 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 58 states. [2020-10-29 03:34:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:25,487 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2020-10-29 03:34:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:34:25,488 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2020-10-29 03:34:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:25,489 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:34:25,489 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:34:25,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:34:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:34:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-29 03:34:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:34:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-29 03:34:25,496 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 126 [2020-10-29 03:34:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:25,497 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-29 03:34:25,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:34:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-29 03:34:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:34:25,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:25,498 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:25,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 03:34:25,498 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1267684456, now seen corresponding path program 55 times [2020-10-29 03:34:25,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:25,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633040821] [2020-10-29 03:34:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking...