/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/reducercommutativity/sep05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:15:21,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:15:21,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:15:21,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:15:21,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:15:21,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:15:22,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:15:22,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:15:22,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:15:22,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:15:22,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:15:22,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:15:22,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:15:22,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:15:22,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:15:22,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:15:22,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:15:22,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:15:22,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:15:22,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:15:22,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:15:22,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:15:22,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:15:22,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:15:22,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:15:22,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:15:22,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:15:22,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:15:22,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:15:22,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:15:22,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:15:22,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:15:22,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:15:22,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:15:22,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:15:22,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:15:22,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:15:22,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:15:22,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:15:22,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:15:22,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:15:22,076 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 12:15:22,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:15:22,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:15:22,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:15:22,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:15:22,143 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:15:22,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:15:22,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:15:22,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:15:22,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:15:22,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:15:22,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:15:22,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:15:22,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:15:22,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:15:22,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:15:22,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:15:22,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:15:22,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:15:22,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:15:22,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:15:22,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:15:22,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:15:22,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:15:22,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:15:22,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:15:22,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:15:22,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:15:22,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:15:22,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:15:22,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:15:22,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:15:22,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:15:22,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:15:22,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:15:22,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:15:22,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep05-1.i [2020-10-29 12:15:22,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918361b40/f40274257422445890ebed87806f3032/FLAGfbdca0d5f [2020-10-29 12:15:23,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:15:23,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep05-1.i [2020-10-29 12:15:23,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918361b40/f40274257422445890ebed87806f3032/FLAGfbdca0d5f [2020-10-29 12:15:23,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918361b40/f40274257422445890ebed87806f3032 [2020-10-29 12:15:23,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:15:23,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:15:23,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:15:23,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:15:23,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:15:23,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:23,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a8f9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23, skipping insertion in model container [2020-10-29 12:15:23,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:23,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:15:23,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:15:23,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:15:23,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:15:23,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:15:23,985 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:15:23,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23 WrapperNode [2020-10-29 12:15:23,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:15:23,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:15:23,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:15:23,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:15:24,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (1/1) ... [2020-10-29 12:15:24,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:15:24,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:15:24,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:15:24,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:15:24,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (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 12:15:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:15:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:15:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:15:24,138 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-29 12:15:24,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:15:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:15:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:15:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:15:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:15:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:15:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:15:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:15:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-29 12:15:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:15:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:15:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:15:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:15:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:15:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:15:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:15:24,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:15:24,629 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:15:24,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:15:24 BoogieIcfgContainer [2020-10-29 12:15:24,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:15:24,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:15:24,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:15:24,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:15:24,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:15:23" (1/3) ... [2020-10-29 12:15:24,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e8a690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:15:24, skipping insertion in model container [2020-10-29 12:15:24,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:15:23" (2/3) ... [2020-10-29 12:15:24,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e8a690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:15:24, skipping insertion in model container [2020-10-29 12:15:24,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:15:24" (3/3) ... [2020-10-29 12:15:24,641 INFO L111 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2020-10-29 12:15:24,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:15:24,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:15:24,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:15:24,703 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:15:24,703 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:15:24,703 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:15:24,703 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:15:24,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:15:24,704 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:15:24,704 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:15:24,704 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:15:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 12:15:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:15:24,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:24,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:24,732 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-29 12:15:24,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:24,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025198654] [2020-10-29 12:15:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-29 12:15:26,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:26,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:15:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:15:26,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:15:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:15:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:26,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:26,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:15:26,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:26,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:15:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:15:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:15:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:26,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:26,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:26,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:15:26,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:26,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:15:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:15:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:27,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:15:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:27,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:15:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:15:27,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025198654] [2020-10-29 12:15:27,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:27,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:15:27,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893130158] [2020-10-29 12:15:27,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:15:27,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:27,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:15:27,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:15:27,082 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 12 states. [2020-10-29 12:15:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:27,594 INFO L93 Difference]: Finished difference Result 90 states and 135 transitions. [2020-10-29 12:15:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:15:27,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 12:15:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:27,607 INFO L225 Difference]: With dead ends: 90 [2020-10-29 12:15:27,607 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 12:15:27,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:15:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 12:15:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-29 12:15:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 12:15:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2020-10-29 12:15:27,664 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 34 [2020-10-29 12:15:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:27,664 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2020-10-29 12:15:27,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:15:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2020-10-29 12:15:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 12:15:27,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:27,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:27,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:15:27,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash 857111420, now seen corresponding path program 1 times [2020-10-29 12:15:27,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:27,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891948498] [2020-10-29 12:15:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 12:15:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:15:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-29 12:15:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:15:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:15:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:29,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:15:29,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:15:29,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:15:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:15:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:15:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:15:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:29,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:15:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:15:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:15:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:15:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:15:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:15:29,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891948498] [2020-10-29 12:15:29,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:29,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:15:29,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979000257] [2020-10-29 12:15:29,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:15:29,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:29,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:15:29,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:15:29,577 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 5 states. [2020-10-29 12:15:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:29,733 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-29 12:15:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:15:29,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-29 12:15:29,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:29,735 INFO L225 Difference]: With dead ends: 66 [2020-10-29 12:15:29,735 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 12:15:29,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:15:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 12:15:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-29 12:15:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:15:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-29 12:15:29,744 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2020-10-29 12:15:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:29,745 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-29 12:15:29,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:15:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-29 12:15:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 12:15:29,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:29,747 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:29,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:15:29,747 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:29,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:29,748 INFO L82 PathProgramCache]: Analyzing trace with hash 811940529, now seen corresponding path program 2 times [2020-10-29 12:15:29,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:29,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841665837] [2020-10-29 12:15:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:34,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:15:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:15:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:15:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:34,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:15:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 12:15:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:34,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:15:34,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:34,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:34,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:15:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 12:15:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:34,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:15:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:15:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:34,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:34,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:15:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:15:34,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:34,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:15:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:15:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:35,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:35,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:15:35,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:15:35,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:35,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:15:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:15:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:15:35,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841665837] [2020-10-29 12:15:35,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:35,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:15:35,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131492624] [2020-10-29 12:15:35,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:15:35,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:15:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:15:35,062 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-29 12:15:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:35,255 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-10-29 12:15:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:15:35,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-29 12:15:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:35,257 INFO L225 Difference]: With dead ends: 62 [2020-10-29 12:15:35,257 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:15:35,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:15:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:15:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-29 12:15:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 12:15:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-29 12:15:35,265 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 52 [2020-10-29 12:15:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:35,266 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-29 12:15:35,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:15:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-29 12:15:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 12:15:35,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:35,268 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:35,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:15:35,268 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash -610286718, now seen corresponding path program 3 times [2020-10-29 12:15:35,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:35,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336382087] [2020-10-29 12:15:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:40,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 12:15:40,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:15:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:15:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:40,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 12:15:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:15:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:15:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:40,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:15:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:40,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:15:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:40,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:15:40,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:15:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:40,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:15:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:15:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:15:40,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 12:15:40,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:40,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:15:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:40,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 12:15:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:15:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 12:15:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:15:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:15:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 12:15:40,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336382087] [2020-10-29 12:15:40,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:40,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:15:40,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138920055] [2020-10-29 12:15:40,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:15:40,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:40,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:15:40,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:15:40,640 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 7 states. [2020-10-29 12:15:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:40,921 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2020-10-29 12:15:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:15:40,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-29 12:15:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:40,923 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:15:40,923 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 12:15:40,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:15:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 12:15:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-29 12:15:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:15:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-29 12:15:40,938 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 61 [2020-10-29 12:15:40,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:40,939 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-29 12:15:40,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:15:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-29 12:15:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:15:40,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:40,941 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:40,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:15:40,941 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:40,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1355680303, now seen corresponding path program 4 times [2020-10-29 12:15:40,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:40,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103274384] [2020-10-29 12:15:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:45,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:45,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:15:45,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:15:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:15:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:45,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 12:15:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:15:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:15:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:46,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:46,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:15:46,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:46,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:15:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 12:15:46,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:46,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:15:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:15:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:46,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:15:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 12:15:46,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:46,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:15:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:15:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:46,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:15:46,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 12:15:46,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:46,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:15:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:15:46,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103274384] [2020-10-29 12:15:46,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:46,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:15:46,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513986275] [2020-10-29 12:15:46,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:15:46,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:15:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:15:46,392 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 8 states. [2020-10-29 12:15:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:46,665 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2020-10-29 12:15:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:15:46,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-29 12:15:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:46,667 INFO L225 Difference]: With dead ends: 72 [2020-10-29 12:15:46,667 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 12:15:46,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:15:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 12:15:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 12:15:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 12:15:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-29 12:15:46,675 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 70 [2020-10-29 12:15:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:46,675 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-29 12:15:46,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:15:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-29 12:15:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:15:46,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:46,677 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:46,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:15:46,677 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:46,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:46,678 INFO L82 PathProgramCache]: Analyzing trace with hash 999380322, now seen corresponding path program 5 times [2020-10-29 12:15:46,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:46,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324787918] [2020-10-29 12:15:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:51,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:51,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:15:51,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:15:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4435 [2020-10-29 12:15:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:51,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:15:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:15:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:51,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:51,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:51,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:51,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:15:51,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:51,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:51,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:51,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:51,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:15:51,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:51,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 12:15:51,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:51,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:51,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:15:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:15:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:15:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:15:52,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 12:15:52,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:15:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:15:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:15:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:15:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 12:15:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:52,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:15:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:15:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 4 proven. 317 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-29 12:15:52,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324787918] [2020-10-29 12:15:52,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:52,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:15:52,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330846915] [2020-10-29 12:15:52,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:15:52,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:52,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:15:52,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:15:52,707 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 18 states. [2020-10-29 12:15:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:54,282 INFO L93 Difference]: Finished difference Result 123 states and 183 transitions. [2020-10-29 12:15:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:15:54,282 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-29 12:15:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:54,285 INFO L225 Difference]: With dead ends: 123 [2020-10-29 12:15:54,285 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 12:15:54,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:15:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 12:15:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91. [2020-10-29 12:15:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 12:15:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2020-10-29 12:15:54,315 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 79 [2020-10-29 12:15:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:54,315 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2020-10-29 12:15:54,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:15:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2020-10-29 12:15:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:15:54,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:54,318 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:54,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:15:54,319 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:54,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1700444900, now seen corresponding path program 1 times [2020-10-29 12:15:54,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:54,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994553424] [2020-10-29 12:15:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:59,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:15:59,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:15:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:15:59,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:59,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:15:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:15:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 12:15:59,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:15:59,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:15:59,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:15:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:15:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:59,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:15:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 12:15:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:59,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:15:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:15:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:15:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 89 proven. 211 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 12:16:00,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994553424] [2020-10-29 12:16:00,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:00,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:16:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614163059] [2020-10-29 12:16:00,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:16:00,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:00,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:16:00,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:16:00,471 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand 16 states. [2020-10-29 12:16:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:02,818 INFO L93 Difference]: Finished difference Result 280 states and 428 transitions. [2020-10-29 12:16:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 12:16:02,819 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-29 12:16:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:02,822 INFO L225 Difference]: With dead ends: 280 [2020-10-29 12:16:02,823 INFO L226 Difference]: Without dead ends: 229 [2020-10-29 12:16:02,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=313, Invalid=1409, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 12:16:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-29 12:16:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 198. [2020-10-29 12:16:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 12:16:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 305 transitions. [2020-10-29 12:16:02,872 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 305 transitions. Word has length 79 [2020-10-29 12:16:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:02,873 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 305 transitions. [2020-10-29 12:16:02,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:16:02,873 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 305 transitions. [2020-10-29 12:16:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:02,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:02,877 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:02,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:16:02,877 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash -11736928, now seen corresponding path program 2 times [2020-10-29 12:16:02,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:02,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265016631] [2020-10-29 12:16:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:03,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:16:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:16:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:16:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:16:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:08,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:16:08,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:08,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:08,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:16:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-29 12:16:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:08,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:16:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:16:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:09,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:09,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-29 12:16:09,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:09,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:09,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:09,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:09,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-29 12:16:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:09,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:16:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 89 proven. 233 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-29 12:16:10,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265016631] [2020-10-29 12:16:10,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:10,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:16:10,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71160337] [2020-10-29 12:16:10,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:16:10,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:10,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:16:10,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:10,037 INFO L87 Difference]: Start difference. First operand 198 states and 305 transitions. Second operand 11 states. [2020-10-29 12:16:11,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:11,334 INFO L93 Difference]: Finished difference Result 553 states and 939 transitions. [2020-10-29 12:16:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:16:11,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-29 12:16:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:11,346 INFO L225 Difference]: With dead ends: 553 [2020-10-29 12:16:11,347 INFO L226 Difference]: Without dead ends: 372 [2020-10-29 12:16:11,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:16:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-29 12:16:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 369. [2020-10-29 12:16:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-29 12:16:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 626 transitions. [2020-10-29 12:16:11,451 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 626 transitions. Word has length 79 [2020-10-29 12:16:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:11,452 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 626 transitions. [2020-10-29 12:16:11,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:16:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 626 transitions. [2020-10-29 12:16:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:11,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:11,465 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:11,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:16:11,466 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:11,466 INFO L82 PathProgramCache]: Analyzing trace with hash -588967580, now seen corresponding path program 3 times [2020-10-29 12:16:11,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:11,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278159376] [2020-10-29 12:16:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:11,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:13,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:16,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:16,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:16,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:16:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:16:16,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:16,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:16:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:16:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:16,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:16,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:16,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:16,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:16,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:16:16,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:16,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:16,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:16,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:16,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:16,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:16,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:16,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:16:16,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-29 12:16:16,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:16,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:16:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:17,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-29 12:16:17,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:17,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 89 proven. 233 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-29 12:16:17,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278159376] [2020-10-29 12:16:17,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:17,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:16:17,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076018665] [2020-10-29 12:16:17,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:16:17,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:17,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:16:17,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:16:17,813 INFO L87 Difference]: Start difference. First operand 369 states and 626 transitions. Second operand 13 states. [2020-10-29 12:16:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:19,045 INFO L93 Difference]: Finished difference Result 946 states and 1780 transitions. [2020-10-29 12:16:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:16:19,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-10-29 12:16:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:19,059 INFO L225 Difference]: With dead ends: 946 [2020-10-29 12:16:19,059 INFO L226 Difference]: Without dead ends: 612 [2020-10-29 12:16:19,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:16:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-10-29 12:16:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 609. [2020-10-29 12:16:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-10-29 12:16:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1145 transitions. [2020-10-29 12:16:19,207 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1145 transitions. Word has length 79 [2020-10-29 12:16:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:19,208 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 1145 transitions. [2020-10-29 12:16:19,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:16:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1145 transitions. [2020-10-29 12:16:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:19,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:19,226 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:19,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:16:19,226 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:19,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash -806058012, now seen corresponding path program 4 times [2020-10-29 12:16:19,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:19,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127948416] [2020-10-29 12:16:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:16:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:24,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:24,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 12:16:24,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:16:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:24,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 12:16:24,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:24,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:16:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:24,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 89 proven. 206 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 12:16:24,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127948416] [2020-10-29 12:16:24,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:24,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:16:24,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946281228] [2020-10-29 12:16:24,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:16:24,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:16:24,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:24,851 INFO L87 Difference]: Start difference. First operand 609 states and 1145 transitions. Second operand 11 states. [2020-10-29 12:16:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:26,419 INFO L93 Difference]: Finished difference Result 1215 states and 2261 transitions. [2020-10-29 12:16:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:16:26,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-29 12:16:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:26,433 INFO L225 Difference]: With dead ends: 1215 [2020-10-29 12:16:26,434 INFO L226 Difference]: Without dead ends: 724 [2020-10-29 12:16:26,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:16:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-29 12:16:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 715. [2020-10-29 12:16:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-10-29 12:16:26,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1452 transitions. [2020-10-29 12:16:26,571 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1452 transitions. Word has length 79 [2020-10-29 12:16:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:26,571 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 1452 transitions. [2020-10-29 12:16:26,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:16:26,571 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1452 transitions. [2020-10-29 12:16:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:26,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:26,590 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:26,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:16:26,591 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:26,591 INFO L82 PathProgramCache]: Analyzing trace with hash 155374820, now seen corresponding path program 5 times [2020-10-29 12:16:26,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:26,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909262170] [2020-10-29 12:16:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:31,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:31,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:16:31,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:31,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:31,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:16:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 12:16:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:31,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:31,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:16:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-29 12:16:32,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909262170] [2020-10-29 12:16:32,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:32,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:16:32,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073515394] [2020-10-29 12:16:32,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:16:32,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:32,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:16:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:16:32,438 INFO L87 Difference]: Start difference. First operand 715 states and 1452 transitions. Second operand 12 states. [2020-10-29 12:16:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:33,797 INFO L93 Difference]: Finished difference Result 1813 states and 3236 transitions. [2020-10-29 12:16:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:16:33,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-29 12:16:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:33,815 INFO L225 Difference]: With dead ends: 1813 [2020-10-29 12:16:33,815 INFO L226 Difference]: Without dead ends: 1187 [2020-10-29 12:16:33,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:16:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-29 12:16:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1099. [2020-10-29 12:16:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-10-29 12:16:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2016 transitions. [2020-10-29 12:16:34,031 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2016 transitions. Word has length 79 [2020-10-29 12:16:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:34,031 INFO L481 AbstractCegarLoop]: Abstraction has 1099 states and 2016 transitions. [2020-10-29 12:16:34,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:16:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2016 transitions. [2020-10-29 12:16:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:34,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:34,051 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:34,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:16:34,052 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1050007520, now seen corresponding path program 6 times [2020-10-29 12:16:34,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:34,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467943965] [2020-10-29 12:16:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:39,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 12:16:39,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 12:16:39,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:16:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:16:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:39,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:39,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:39,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:16:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:39,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 12:16:39,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:39,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:39,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:39,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:39,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:39,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:39,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 295 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 12:16:39,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467943965] [2020-10-29 12:16:39,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:39,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:16:39,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031750523] [2020-10-29 12:16:39,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:16:39,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:39,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:16:39,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:39,670 INFO L87 Difference]: Start difference. First operand 1099 states and 2016 transitions. Second operand 11 states. [2020-10-29 12:16:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:40,988 INFO L93 Difference]: Finished difference Result 1830 states and 3619 transitions. [2020-10-29 12:16:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:16:40,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-29 12:16:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:41,011 INFO L225 Difference]: With dead ends: 1830 [2020-10-29 12:16:41,011 INFO L226 Difference]: Without dead ends: 1237 [2020-10-29 12:16:41,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:16:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-10-29 12:16:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1196. [2020-10-29 12:16:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-10-29 12:16:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 2292 transitions. [2020-10-29 12:16:41,257 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 2292 transitions. Word has length 79 [2020-10-29 12:16:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:41,257 INFO L481 AbstractCegarLoop]: Abstraction has 1196 states and 2292 transitions. [2020-10-29 12:16:41,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:16:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 2292 transitions. [2020-10-29 12:16:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:41,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:41,286 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:41,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:16:41,287 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:41,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2034669724, now seen corresponding path program 7 times [2020-10-29 12:16:41,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:41,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413557421] [2020-10-29 12:16:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:46,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:16:46,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 12:16:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:16:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:47,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 12:16:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:16:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:47,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-29 12:16:47,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413557421] [2020-10-29 12:16:47,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:47,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:16:47,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626276408] [2020-10-29 12:16:47,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:16:47,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:47,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:16:47,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:16:47,251 INFO L87 Difference]: Start difference. First operand 1196 states and 2292 transitions. Second operand 12 states. [2020-10-29 12:16:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:48,803 INFO L93 Difference]: Finished difference Result 2415 states and 4185 transitions. [2020-10-29 12:16:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:16:48,804 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-29 12:16:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:48,825 INFO L225 Difference]: With dead ends: 2415 [2020-10-29 12:16:48,826 INFO L226 Difference]: Without dead ends: 1712 [2020-10-29 12:16:48,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:16:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2020-10-29 12:16:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1408. [2020-10-29 12:16:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2020-10-29 12:16:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2435 transitions. [2020-10-29 12:16:49,091 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2435 transitions. Word has length 79 [2020-10-29 12:16:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:49,091 INFO L481 AbstractCegarLoop]: Abstraction has 1408 states and 2435 transitions. [2020-10-29 12:16:49,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:16:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2435 transitions. [2020-10-29 12:16:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 12:16:49,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:49,127 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:49,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:16:49,127 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:49,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1416292070, now seen corresponding path program 8 times [2020-10-29 12:16:49,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:49,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373440066] [2020-10-29 12:16:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:49,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 12:16:49,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-29 12:16:49,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:49,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:16:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:49,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:49,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:49,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:49,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:49,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:49,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:49,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:49,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:49,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:16:49,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:49,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:49,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 12:16:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:49,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:49,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:49,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:49,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:49,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:16:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:49,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-29 12:16:49,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373440066] [2020-10-29 12:16:49,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:16:49,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:16:49,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383572642] [2020-10-29 12:16:49,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:16:49,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:49,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:16:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:16:49,765 INFO L87 Difference]: Start difference. First operand 1408 states and 2435 transitions. Second operand 4 states. [2020-10-29 12:16:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:50,008 INFO L93 Difference]: Finished difference Result 2810 states and 4864 transitions. [2020-10-29 12:16:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:16:50,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-29 12:16:50,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:50,025 INFO L225 Difference]: With dead ends: 2810 [2020-10-29 12:16:50,025 INFO L226 Difference]: Without dead ends: 1410 [2020-10-29 12:16:50,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:16:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-10-29 12:16:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1409. [2020-10-29 12:16:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-10-29 12:16:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2436 transitions. [2020-10-29 12:16:50,300 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2436 transitions. Word has length 79 [2020-10-29 12:16:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:50,300 INFO L481 AbstractCegarLoop]: Abstraction has 1409 states and 2436 transitions. [2020-10-29 12:16:50,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:16:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2436 transitions. [2020-10-29 12:16:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 12:16:50,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:50,317 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:50,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:16:50,317 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:50,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:50,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1317853060, now seen corresponding path program 1 times [2020-10-29 12:16:50,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:50,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837266031] [2020-10-29 12:16:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:50,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:50,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:16:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:50,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:16:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:50,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:16:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:50,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:16:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:51,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:51,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:51,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-29 12:16:51,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837266031] [2020-10-29 12:16:51,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:51,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:16:51,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050286432] [2020-10-29 12:16:51,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:16:51,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:16:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:16:51,073 INFO L87 Difference]: Start difference. First operand 1409 states and 2436 transitions. Second operand 5 states. [2020-10-29 12:16:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:51,335 INFO L93 Difference]: Finished difference Result 2812 states and 4866 transitions. [2020-10-29 12:16:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:16:51,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-29 12:16:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:51,351 INFO L225 Difference]: With dead ends: 2812 [2020-10-29 12:16:51,351 INFO L226 Difference]: Without dead ends: 1412 [2020-10-29 12:16:51,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:16:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2020-10-29 12:16:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1411. [2020-10-29 12:16:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-10-29 12:16:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2438 transitions. [2020-10-29 12:16:51,614 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2438 transitions. Word has length 81 [2020-10-29 12:16:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:51,615 INFO L481 AbstractCegarLoop]: Abstraction has 1411 states and 2438 transitions. [2020-10-29 12:16:51,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:16:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2438 transitions. [2020-10-29 12:16:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 12:16:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:51,629 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:51,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:16:51,630 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1207244962, now seen corresponding path program 2 times [2020-10-29 12:16:51,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:51,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080397312] [2020-10-29 12:16:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:51,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:16:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:52,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:52,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 12:16:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 12:16:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:16:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:52,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:52,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-29 12:16:52,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080397312] [2020-10-29 12:16:52,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:52,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:16:52,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467684081] [2020-10-29 12:16:52,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:16:52,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:16:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:16:52,548 INFO L87 Difference]: Start difference. First operand 1411 states and 2438 transitions. Second operand 6 states. [2020-10-29 12:16:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:52,803 INFO L93 Difference]: Finished difference Result 2814 states and 4868 transitions. [2020-10-29 12:16:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:16:52,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-29 12:16:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:52,819 INFO L225 Difference]: With dead ends: 2814 [2020-10-29 12:16:52,819 INFO L226 Difference]: Without dead ends: 1414 [2020-10-29 12:16:52,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:16:52,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-10-29 12:16:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1413. [2020-10-29 12:16:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-10-29 12:16:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2440 transitions. [2020-10-29 12:16:53,075 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2440 transitions. Word has length 83 [2020-10-29 12:16:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:53,076 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 2440 transitions. [2020-10-29 12:16:53,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:16:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2440 transitions. [2020-10-29 12:16:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 12:16:53,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:53,092 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:53,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:16:53,093 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:53,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2007922112, now seen corresponding path program 3 times [2020-10-29 12:16:53,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:53,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221889221] [2020-10-29 12:16:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:16:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:54,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:54,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 12:16:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:16:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:16:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-29 12:16:54,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221889221] [2020-10-29 12:16:54,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:54,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:16:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536347285] [2020-10-29 12:16:54,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:16:54,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:16:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:54,272 INFO L87 Difference]: Start difference. First operand 1413 states and 2440 transitions. Second operand 7 states. [2020-10-29 12:16:54,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:54,535 INFO L93 Difference]: Finished difference Result 2816 states and 4870 transitions. [2020-10-29 12:16:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:16:54,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-29 12:16:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:54,551 INFO L225 Difference]: With dead ends: 2816 [2020-10-29 12:16:54,551 INFO L226 Difference]: Without dead ends: 1416 [2020-10-29 12:16:54,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-10-29 12:16:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1415. [2020-10-29 12:16:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2020-10-29 12:16:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2442 transitions. [2020-10-29 12:16:54,802 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2442 transitions. Word has length 85 [2020-10-29 12:16:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:54,802 INFO L481 AbstractCegarLoop]: Abstraction has 1415 states and 2442 transitions. [2020-10-29 12:16:54,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:16:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2442 transitions. [2020-10-29 12:16:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:16:54,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:54,818 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:54,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:16:54,818 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash 592972894, now seen corresponding path program 4 times [2020-10-29 12:16:54,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:54,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805953511] [2020-10-29 12:16:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 12:16:56,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-29 12:16:56,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:16:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:16:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:56,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:56,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:56,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:56,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 12:16:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:56,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:56,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:16:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:56,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:16:56,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:56,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:16:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:56,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:56,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-29 12:16:56,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805953511] [2020-10-29 12:16:56,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:56,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:16:56,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097053809] [2020-10-29 12:16:56,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:16:56,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:56,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:16:56,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:16:56,239 INFO L87 Difference]: Start difference. First operand 1415 states and 2442 transitions. Second operand 8 states. [2020-10-29 12:16:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:56,492 INFO L93 Difference]: Finished difference Result 2817 states and 4871 transitions. [2020-10-29 12:16:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:16:56,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-29 12:16:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:56,508 INFO L225 Difference]: With dead ends: 2817 [2020-10-29 12:16:56,509 INFO L226 Difference]: Without dead ends: 1417 [2020-10-29 12:16:56,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:16:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-10-29 12:16:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1417. [2020-10-29 12:16:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-29 12:16:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2444 transitions. [2020-10-29 12:16:56,769 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2444 transitions. Word has length 87 [2020-10-29 12:16:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:56,770 INFO L481 AbstractCegarLoop]: Abstraction has 1417 states and 2444 transitions. [2020-10-29 12:16:56,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:16:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2444 transitions. [2020-10-29 12:16:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:16:56,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:56,785 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:56,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:16:56,786 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:56,786 INFO L82 PathProgramCache]: Analyzing trace with hash 382107388, now seen corresponding path program 5 times [2020-10-29 12:16:56,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:56,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442383025] [2020-10-29 12:16:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 12:16:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:57,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:57,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:16:57,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:16:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:57,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:16:57,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:57,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:16:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:57,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:16:57,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:16:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:16:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-29 12:16:57,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442383025] [2020-10-29 12:16:57,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:16:57,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:16:57,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149152131] [2020-10-29 12:16:57,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:16:57,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:16:57,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:16:57,241 INFO L87 Difference]: Start difference. First operand 1417 states and 2444 transitions. Second operand 4 states. [2020-10-29 12:16:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:57,414 INFO L93 Difference]: Finished difference Result 1864 states and 3088 transitions. [2020-10-29 12:16:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:16:57,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-29 12:16:57,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:57,426 INFO L225 Difference]: With dead ends: 1864 [2020-10-29 12:16:57,426 INFO L226 Difference]: Without dead ends: 1224 [2020-10-29 12:16:57,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:16:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-10-29 12:16:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1160. [2020-10-29 12:16:57,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-10-29 12:16:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1933 transitions. [2020-10-29 12:16:57,630 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1933 transitions. Word has length 89 [2020-10-29 12:16:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:57,631 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1933 transitions. [2020-10-29 12:16:57,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:16:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1933 transitions. [2020-10-29 12:16:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:16:57,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:57,641 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:57,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:16:57,641 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash 100081208, now seen corresponding path program 1 times [2020-10-29 12:16:57,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:57,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648516275] [2020-10-29 12:16:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:17:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:02,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:02,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:02,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:03,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:03,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 12:17:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:03,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 12:17:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 89 proven. 234 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 12:17:04,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648516275] [2020-10-29 12:17:04,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716585290] [2020-10-29 12:17:04,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:04,099 INFO L87 Difference]: Start difference. First operand 1160 states and 1933 transitions. Second operand 12 states. [2020-10-29 12:17:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:05,538 INFO L93 Difference]: Finished difference Result 1482 states and 2463 transitions. [2020-10-29 12:17:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:17:05,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-29 12:17:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:05,551 INFO L225 Difference]: With dead ends: 1482 [2020-10-29 12:17:05,551 INFO L226 Difference]: Without dead ends: 1285 [2020-10-29 12:17:05,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:17:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2020-10-29 12:17:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1250. [2020-10-29 12:17:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-29 12:17:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 2104 transitions. [2020-10-29 12:17:05,748 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 2104 transitions. Word has length 91 [2020-10-29 12:17:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:05,748 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 2104 transitions. [2020-10-29 12:17:05,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 2104 transitions. [2020-10-29 12:17:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:05,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:05,759 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:05,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:17:05,760 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:05,760 INFO L82 PathProgramCache]: Analyzing trace with hash -477149444, now seen corresponding path program 2 times [2020-10-29 12:17:05,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:05,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776870290] [2020-10-29 12:17:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:17:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:17:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:10,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:10,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-29 12:17:11,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:11,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 12:17:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:11,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:11,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:11,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 12:17:11,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:11,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 89 proven. 234 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 12:17:12,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776870290] [2020-10-29 12:17:12,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:12,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:17:12,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301267445] [2020-10-29 12:17:12,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:17:12,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:17:12,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:17:12,065 INFO L87 Difference]: Start difference. First operand 1250 states and 2104 transitions. Second operand 14 states. [2020-10-29 12:17:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:13,485 INFO L93 Difference]: Finished difference Result 1568 states and 2666 transitions. [2020-10-29 12:17:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:17:13,486 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-29 12:17:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:13,500 INFO L225 Difference]: With dead ends: 1568 [2020-10-29 12:17:13,500 INFO L226 Difference]: Without dead ends: 1376 [2020-10-29 12:17:13,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:17:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-29 12:17:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1370. [2020-10-29 12:17:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2020-10-29 12:17:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2326 transitions. [2020-10-29 12:17:13,708 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2326 transitions. Word has length 91 [2020-10-29 12:17:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:13,709 INFO L481 AbstractCegarLoop]: Abstraction has 1370 states and 2326 transitions. [2020-10-29 12:17:13,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:17:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2326 transitions. [2020-10-29 12:17:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:13,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:13,722 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:13,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:17:13,722 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:13,722 INFO L82 PathProgramCache]: Analyzing trace with hash 293550008, now seen corresponding path program 3 times [2020-10-29 12:17:13,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:13,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614299156] [2020-10-29 12:17:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:18,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:17:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:18,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:18,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:18,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:18,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:18,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:17:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:18,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:19,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 89 proven. 207 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 12:17:19,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614299156] [2020-10-29 12:17:19,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:19,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722450785] [2020-10-29 12:17:19,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:19,548 INFO L87 Difference]: Start difference. First operand 1370 states and 2326 transitions. Second operand 12 states. [2020-10-29 12:17:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:20,888 INFO L93 Difference]: Finished difference Result 1606 states and 2788 transitions. [2020-10-29 12:17:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:17:20,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-29 12:17:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:20,902 INFO L225 Difference]: With dead ends: 1606 [2020-10-29 12:17:20,903 INFO L226 Difference]: Without dead ends: 1436 [2020-10-29 12:17:20,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:17:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2020-10-29 12:17:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1386. [2020-10-29 12:17:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-29 12:17:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 2352 transitions. [2020-10-29 12:17:21,152 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 2352 transitions. Word has length 91 [2020-10-29 12:17:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:21,153 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 2352 transitions. [2020-10-29 12:17:21,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 2352 transitions. [2020-10-29 12:17:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:21,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:21,168 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:21,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:17:21,168 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1963537538, now seen corresponding path program 4 times [2020-10-29 12:17:21,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:21,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861356082] [2020-10-29 12:17:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:17:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:17:26,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:17:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:17:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:26,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:27,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-29 12:17:27,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:27,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:27,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 89 proven. 225 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:17:27,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861356082] [2020-10-29 12:17:27,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:27,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:17:27,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233515868] [2020-10-29 12:17:27,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:17:27,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:27,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:17:27,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:17:27,845 INFO L87 Difference]: Start difference. First operand 1386 states and 2352 transitions. Second operand 18 states. [2020-10-29 12:17:30,586 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-29 12:17:30,730 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-29 12:17:31,134 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-29 12:17:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:31,935 INFO L93 Difference]: Finished difference Result 1577 states and 2816 transitions. [2020-10-29 12:17:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 12:17:31,935 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2020-10-29 12:17:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:31,952 INFO L225 Difference]: With dead ends: 1577 [2020-10-29 12:17:31,952 INFO L226 Difference]: Without dead ends: 1551 [2020-10-29 12:17:31,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=413, Invalid=1843, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 12:17:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-10-29 12:17:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1468. [2020-10-29 12:17:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1468 states. [2020-10-29 12:17:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2536 transitions. [2020-10-29 12:17:32,206 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2536 transitions. Word has length 91 [2020-10-29 12:17:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:32,206 INFO L481 AbstractCegarLoop]: Abstraction has 1468 states and 2536 transitions. [2020-10-29 12:17:32,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:17:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2536 transitions. [2020-10-29 12:17:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:32,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:32,223 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:32,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:17:32,223 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1790470712, now seen corresponding path program 5 times [2020-10-29 12:17:32,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:32,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034635378] [2020-10-29 12:17:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:37,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:17:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:17:37,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:17:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:38,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-29 12:17:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:38,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:38,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:38,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 12:17:38,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034635378] [2020-10-29 12:17:38,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:38,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:17:38,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091136915] [2020-10-29 12:17:38,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:17:38,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:38,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:17:38,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:17:38,541 INFO L87 Difference]: Start difference. First operand 1468 states and 2536 transitions. Second operand 15 states. [2020-10-29 12:17:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:40,128 INFO L93 Difference]: Finished difference Result 2313 states and 3894 transitions. [2020-10-29 12:17:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:17:40,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-29 12:17:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:40,142 INFO L225 Difference]: With dead ends: 2313 [2020-10-29 12:17:40,142 INFO L226 Difference]: Without dead ends: 1505 [2020-10-29 12:17:40,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:17:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2020-10-29 12:17:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1468. [2020-10-29 12:17:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1468 states. [2020-10-29 12:17:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2441 transitions. [2020-10-29 12:17:40,400 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2441 transitions. Word has length 91 [2020-10-29 12:17:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:40,401 INFO L481 AbstractCegarLoop]: Abstraction has 1468 states and 2441 transitions. [2020-10-29 12:17:40,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:17:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2441 transitions. [2020-10-29 12:17:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:40,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:40,412 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:40,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:17:40,414 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:40,415 INFO L82 PathProgramCache]: Analyzing trace with hash 418663414, now seen corresponding path program 6 times [2020-10-29 12:17:40,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:40,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988089541] [2020-10-29 12:17:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:40,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:17:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:45,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:17:45,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:45,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:46,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:46,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:46,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 89 proven. 234 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 12:17:46,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988089541] [2020-10-29 12:17:46,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:46,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:46,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731496535] [2020-10-29 12:17:46,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:46,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:46,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:46,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:46,876 INFO L87 Difference]: Start difference. First operand 1468 states and 2441 transitions. Second operand 12 states. [2020-10-29 12:17:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:48,376 INFO L93 Difference]: Finished difference Result 1766 states and 2900 transitions. [2020-10-29 12:17:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:17:48,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-29 12:17:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:48,388 INFO L225 Difference]: With dead ends: 1766 [2020-10-29 12:17:48,388 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 12:17:48,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:17:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 12:17:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1514. [2020-10-29 12:17:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2020-10-29 12:17:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2439 transitions. [2020-10-29 12:17:48,653 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2439 transitions. Word has length 91 [2020-10-29 12:17:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:48,653 INFO L481 AbstractCegarLoop]: Abstraction has 1514 states and 2439 transitions. [2020-10-29 12:17:48,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2439 transitions. [2020-10-29 12:17:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:48,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:48,661 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:48,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:17:48,661 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash -592453836, now seen corresponding path program 7 times [2020-10-29 12:17:48,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:48,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412549133] [2020-10-29 12:17:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:17:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:17:53,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:17:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:53,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:17:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:54,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:54,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 12:17:54,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:54,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 143 proven. 171 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:17:54,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412549133] [2020-10-29 12:17:54,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:54,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:17:54,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878574235] [2020-10-29 12:17:54,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:17:54,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:54,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:17:54,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:17:54,877 INFO L87 Difference]: Start difference. First operand 1514 states and 2439 transitions. Second operand 18 states. [2020-10-29 12:17:57,399 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-29 12:17:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:57,929 INFO L93 Difference]: Finished difference Result 1597 states and 2593 transitions. [2020-10-29 12:17:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 12:17:57,930 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2020-10-29 12:17:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:57,939 INFO L225 Difference]: With dead ends: 1597 [2020-10-29 12:17:57,940 INFO L226 Difference]: Without dead ends: 1565 [2020-10-29 12:17:57,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 12:17:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-10-29 12:17:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1480. [2020-10-29 12:17:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1480 states. [2020-10-29 12:17:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2303 transitions. [2020-10-29 12:17:58,200 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2303 transitions. Word has length 91 [2020-10-29 12:17:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:58,201 INFO L481 AbstractCegarLoop]: Abstraction has 1480 states and 2303 transitions. [2020-10-29 12:17:58,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:17:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2303 transitions. [2020-10-29 12:17:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:17:58,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:58,212 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 10, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:58,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:17:58,212 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash 627777464, now seen corresponding path program 8 times [2020-10-29 12:17:58,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:58,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851813771] [2020-10-29 12:17:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 12:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:17:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:58,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:58,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:58,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:58,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:17:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:58,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:17:58,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:17:58,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:58,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:17:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-29 12:17:58,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851813771] [2020-10-29 12:17:58,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:58,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:17:58,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900324673] [2020-10-29 12:17:58,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:17:58,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:58,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:17:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:58,818 INFO L87 Difference]: Start difference. First operand 1480 states and 2303 transitions. Second operand 5 states. [2020-10-29 12:17:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:59,016 INFO L93 Difference]: Finished difference Result 1872 states and 2800 transitions. [2020-10-29 12:17:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:17:59,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-29 12:17:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:59,022 INFO L225 Difference]: With dead ends: 1872 [2020-10-29 12:17:59,022 INFO L226 Difference]: Without dead ends: 1294 [2020-10-29 12:17:59,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-10-29 12:17:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1198. [2020-10-29 12:17:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-29 12:17:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1829 transitions. [2020-10-29 12:17:59,215 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1829 transitions. Word has length 91 [2020-10-29 12:17:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:59,215 INFO L481 AbstractCegarLoop]: Abstraction has 1198 states and 1829 transitions. [2020-10-29 12:17:59,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:17:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1829 transitions. [2020-10-29 12:17:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:17:59,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:59,223 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:59,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:17:59,223 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:59,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1319930878, now seen corresponding path program 9 times [2020-10-29 12:17:59,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:59,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37717759] [2020-10-29 12:17:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:18:04,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:18:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:18:04,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:18:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:18:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:18:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:18:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:18:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:18:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:06,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:06,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-29 12:18:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:06,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:18:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 96 proven. 236 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 12:18:06,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37717759] [2020-10-29 12:18:06,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:06,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:18:06,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571951439] [2020-10-29 12:18:06,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:18:06,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:18:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:18:06,454 INFO L87 Difference]: Start difference. First operand 1198 states and 1829 transitions. Second operand 20 states. [2020-10-29 12:18:08,291 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-29 12:18:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:08,873 INFO L93 Difference]: Finished difference Result 1338 states and 2112 transitions. [2020-10-29 12:18:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:18:08,874 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-29 12:18:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:08,883 INFO L225 Difference]: With dead ends: 1338 [2020-10-29 12:18:08,883 INFO L226 Difference]: Without dead ends: 1332 [2020-10-29 12:18:08,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:18:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-29 12:18:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1286. [2020-10-29 12:18:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1286 states. [2020-10-29 12:18:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1999 transitions. [2020-10-29 12:18:09,138 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1999 transitions. Word has length 93 [2020-10-29 12:18:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:09,139 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1999 transitions. [2020-10-29 12:18:09,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:18:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1999 transitions. [2020-10-29 12:18:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:18:09,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:09,155 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:09,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:18:09,155 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2090630330, now seen corresponding path program 10 times [2020-10-29 12:18:09,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:09,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627659307] [2020-10-29 12:18:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:18:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:18:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:18:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:18:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:18:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:14,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:18:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:14,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:14,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 12:18:14,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:18:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:18:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:15,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-29 12:18:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:18:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:15,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:15,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:15,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 12:18:15,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:15,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 93 proven. 226 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 12:18:15,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627659307] [2020-10-29 12:18:15,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:15,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:18:15,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165357925] [2020-10-29 12:18:15,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:18:15,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:15,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:18:15,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:18:15,466 INFO L87 Difference]: Start difference. First operand 1286 states and 1999 transitions. Second operand 16 states. [2020-10-29 12:18:17,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:17,607 INFO L93 Difference]: Finished difference Result 1635 states and 2681 transitions. [2020-10-29 12:18:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:18:17,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-10-29 12:18:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:17,621 INFO L225 Difference]: With dead ends: 1635 [2020-10-29 12:18:17,621 INFO L226 Difference]: Without dead ends: 1449 [2020-10-29 12:18:17,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=200, Invalid=1206, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:18:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2020-10-29 12:18:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1420. [2020-10-29 12:18:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-10-29 12:18:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2220 transitions. [2020-10-29 12:18:17,902 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2220 transitions. Word has length 93 [2020-10-29 12:18:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:17,902 INFO L481 AbstractCegarLoop]: Abstraction has 1420 states and 2220 transitions. [2020-10-29 12:18:17,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:18:17,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2220 transitions. [2020-10-29 12:18:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:18:17,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:17,915 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:17,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:18:17,915 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:17,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2013369022, now seen corresponding path program 11 times [2020-10-29 12:18:17,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:17,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744186368] [2020-10-29 12:18:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:18:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 12:18:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:23,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:23,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:23,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:18:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:23,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-29 12:18:23,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:23,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:18:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:18:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:24,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-29 12:18:24,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:24,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:24,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:18:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 89 proven. 247 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-29 12:18:24,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744186368] [2020-10-29 12:18:24,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:24,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:18:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746732010] [2020-10-29 12:18:24,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:18:24,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:24,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:18:24,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:18:24,969 INFO L87 Difference]: Start difference. First operand 1420 states and 2220 transitions. Second operand 17 states. [2020-10-29 12:18:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:26,795 INFO L93 Difference]: Finished difference Result 1810 states and 2816 transitions. [2020-10-29 12:18:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:18:26,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2020-10-29 12:18:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:26,809 INFO L225 Difference]: With dead ends: 1810 [2020-10-29 12:18:26,809 INFO L226 Difference]: Without dead ends: 1597 [2020-10-29 12:18:26,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:18:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-10-29 12:18:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1532. [2020-10-29 12:18:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2020-10-29 12:18:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2409 transitions. [2020-10-29 12:18:27,092 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2409 transitions. Word has length 93 [2020-10-29 12:18:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:27,092 INFO L481 AbstractCegarLoop]: Abstraction has 1532 states and 2409 transitions. [2020-10-29 12:18:27,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:18:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2409 transitions. [2020-10-29 12:18:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:18:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:27,108 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:27,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:18:27,108 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1192934920, now seen corresponding path program 12 times [2020-10-29 12:18:27,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:27,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673217868] [2020-10-29 12:18:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:28,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 12:18:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:32,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:18:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:32,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 12:18:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:18:32,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:18:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:33,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 12:18:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:18:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:33,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-29 12:18:33,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:33,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 89 proven. 237 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 12:18:33,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673217868] [2020-10-29 12:18:33,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:33,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:18:33,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095545574] [2020-10-29 12:18:33,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:18:33,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:33,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:18:33,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:18:33,455 INFO L87 Difference]: Start difference. First operand 1532 states and 2409 transitions. Second operand 13 states. [2020-10-29 12:18:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:35,060 INFO L93 Difference]: Finished difference Result 1831 states and 2839 transitions. [2020-10-29 12:18:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:18:35,061 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-10-29 12:18:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:35,070 INFO L225 Difference]: With dead ends: 1831 [2020-10-29 12:18:35,070 INFO L226 Difference]: Without dead ends: 1612 [2020-10-29 12:18:35,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:18:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-10-29 12:18:35,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1553. [2020-10-29 12:18:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-29 12:18:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2422 transitions. [2020-10-29 12:18:35,346 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2422 transitions. Word has length 93 [2020-10-29 12:18:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:35,348 INFO L481 AbstractCegarLoop]: Abstraction has 1553 states and 2422 transitions. [2020-10-29 12:18:35,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:18:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2422 transitions. [2020-10-29 12:18:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:18:35,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:35,360 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 10, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:35,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 12:18:35,361 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2087844678, now seen corresponding path program 13 times [2020-10-29 12:18:35,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:35,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46926536] [2020-10-29 12:18:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:40,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:18:40,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:18:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:18:40,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:40,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:18:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:18:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:40,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:40,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:40,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:40,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:18:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:40,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:18:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:41,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:18:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:41,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:41,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:41,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 12:18:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:41,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:18:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:18:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 89 proven. 236 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 12:18:41,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46926536] [2020-10-29 12:18:41,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:41,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:18:41,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668467130] [2020-10-29 12:18:41,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:18:41,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:41,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:18:41,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:18:41,764 INFO L87 Difference]: Start difference. First operand 1553 states and 2422 transitions. Second operand 17 states. [2020-10-29 12:18:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:44,585 INFO L93 Difference]: Finished difference Result 1597 states and 2465 transitions. [2020-10-29 12:18:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 12:18:44,586 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2020-10-29 12:18:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:44,597 INFO L225 Difference]: With dead ends: 1597 [2020-10-29 12:18:44,597 INFO L226 Difference]: Without dead ends: 1553 [2020-10-29 12:18:44,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=224, Invalid=1582, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:18:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2020-10-29 12:18:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1503. [2020-10-29 12:18:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-10-29 12:18:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2324 transitions. [2020-10-29 12:18:44,851 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2324 transitions. Word has length 93 [2020-10-29 12:18:44,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:44,851 INFO L481 AbstractCegarLoop]: Abstraction has 1503 states and 2324 transitions. [2020-10-29 12:18:44,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:18:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2324 transitions. [2020-10-29 12:18:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:18:44,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:44,862 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:44,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 12:18:44,863 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:44,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1692125054, now seen corresponding path program 14 times [2020-10-29 12:18:44,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:44,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563821883] [2020-10-29 12:18:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking...