/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/mapavg3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:39:31,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:39:31,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:39:31,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:39:31,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:39:31,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:39:31,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:39:31,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:39:31,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:39:31,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:39:31,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:39:31,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:39:31,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:39:31,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:39:31,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:39:31,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:39:31,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:39:31,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:39:31,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:39:31,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:39:31,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:39:31,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:39:31,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:39:31,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:39:31,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:39:31,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:39:31,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:39:31,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:39:31,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:39:31,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:39:31,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:39:31,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:39:31,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:39:31,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:39:31,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:39:31,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:39:31,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:39:31,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:39:31,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:39:31,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:39:31,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:39:31,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 08:39:31,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:39:31,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:39:31,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:39:31,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:39:31,471 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:39:31,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:39:31,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:39:31,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:39:31,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:39:31,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:39:31,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:39:31,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:39:31,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:39:31,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:39:31,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:39:31,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:39:31,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:39:31,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:39:31,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:39:31,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:39:31,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:39:31,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:31,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:39:31,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:39:31,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:39:31,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:39:31,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:39:31,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:39:31,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:39:31,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:39:31,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:39:31,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:39:31,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:39:31,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:39:31,848 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:39:31,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg3.i [2020-10-28 08:39:31,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e5a614f0/f4a14007bf154b278a0468789330bb24/FLAG71204fcad [2020-10-28 08:39:32,560 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:39:32,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg3.i [2020-10-28 08:39:32,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e5a614f0/f4a14007bf154b278a0468789330bb24/FLAG71204fcad [2020-10-28 08:39:32,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e5a614f0/f4a14007bf154b278a0468789330bb24 [2020-10-28 08:39:32,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:39:32,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:39:32,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:32,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:39:32,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:39:32,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:32" (1/1) ... [2020-10-28 08:39:32,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fddb25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:32, skipping insertion in model container [2020-10-28 08:39:32,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:32" (1/1) ... [2020-10-28 08:39:32,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:39:32,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:39:33,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:33,132 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:39:33,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:33,171 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:39:33,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33 WrapperNode [2020-10-28 08:39:33,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:33,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:39:33,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:39:33,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:39:33,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... [2020-10-28 08:39:33,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:39:33,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:39:33,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:39:33,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:39:33,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-28 08:39:33,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-28 08:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:39:33,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:39:33,680 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:39:33,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:33 BoogieIcfgContainer [2020-10-28 08:39:33,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:39:33,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:39:33,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:39:33,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:39:33,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:32" (1/3) ... [2020-10-28 08:39:33,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bfbcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:33, skipping insertion in model container [2020-10-28 08:39:33,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:33" (2/3) ... [2020-10-28 08:39:33,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bfbcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:33, skipping insertion in model container [2020-10-28 08:39:33,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:33" (3/3) ... [2020-10-28 08:39:33,692 INFO L111 eAbstractionObserver]: Analyzing ICFG mapavg3.i [2020-10-28 08:39:33,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:39:33,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:39:33,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:39:33,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:39:33,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:39:33,757 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:39:33,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:39:33,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:39:33,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:39:33,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:39:33,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:39:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 08:39:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:33,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:33,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:33,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692497, now seen corresponding path program 1 times [2020-10-28 08:39:33,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:33,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431531505] [2020-10-28 08:39:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:34,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:35,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-28 08:39:35,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:39:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:35,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:35,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:35,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:39:35,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:35,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:36,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:36,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:36,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:36,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:36,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:39:36,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:39:36,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431531505] [2020-10-28 08:39:36,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:36,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 08:39:36,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449622034] [2020-10-28 08:39:36,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:39:36,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:36,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:39:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:36,114 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 08:39:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:36,209 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 08:39:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:39:36,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 08:39:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:36,220 INFO L225 Difference]: With dead ends: 60 [2020-10-28 08:39:36,220 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 08:39:36,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 08:39:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 08:39:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:39:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 08:39:36,269 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 08:39:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:36,269 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 08:39:36,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:39:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 08:39:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:36,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:36,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:36,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:39:36,273 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:36,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:36,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1911757649, now seen corresponding path program 1 times [2020-10-28 08:39:36,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:36,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527912826] [2020-10-28 08:39:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:38,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:38,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2273 [2020-10-28 08:39:38,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:38,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:38,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:38,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:39:38,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:38,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:38,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:38,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:38,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:38,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:38,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:38,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:38,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:38,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:38,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:38,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:38,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:38,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:39:38,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527912826] [2020-10-28 08:39:38,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:38,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:38,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387793353] [2020-10-28 08:39:38,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:38,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:38,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:38,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:38,720 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 08:39:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:38,860 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-28 08:39:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:38,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 08:39:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:38,862 INFO L225 Difference]: With dead ends: 50 [2020-10-28 08:39:38,862 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 08:39:38,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 08:39:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 08:39:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:39:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 08:39:38,881 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 08:39:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:38,882 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 08:39:38,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 08:39:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 08:39:38,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:38,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:38,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:39:38,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1249483955, now seen corresponding path program 1 times [2020-10-28 08:39:38,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:38,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620189830] [2020-10-28 08:39:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:41,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 08:39:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2842 [2020-10-28 08:39:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:41,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:41,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:41,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:41,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:41,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:41,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:41,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:41,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:41,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:41,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:39:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:39:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:41,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:39:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:41,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:41,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:41,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:41,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:41,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:41,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:41,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:39:41,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620189830] [2020-10-28 08:39:41,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:41,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:41,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111901051] [2020-10-28 08:39:41,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:41,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:41,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:41,941 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 08:39:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:42,092 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 08:39:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:42,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 08:39:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:42,095 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:42,096 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:39:42,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:39:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:39:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:39:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 08:39:42,113 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-28 08:39:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:42,114 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 08:39:42,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 08:39:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 08:39:42,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:42,116 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:42,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:39:42,117 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:42,117 INFO L82 PathProgramCache]: Analyzing trace with hash 459623829, now seen corresponding path program 2 times [2020-10-28 08:39:42,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:42,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243749957] [2020-10-28 08:39:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 08:39:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:39:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3637 [2020-10-28 08:39:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:39:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:45,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:45,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:45,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:45,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:45,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:45,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:45,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:45,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:45,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:45,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:45,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:39:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:45,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:39:45,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:39:45,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243749957] [2020-10-28 08:39:45,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:45,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:45,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263874745] [2020-10-28 08:39:45,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:45,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:45,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:45,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:45,966 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 08:39:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:46,119 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 08:39:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:46,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 08:39:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:46,121 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:46,121 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:39:46,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:39:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:39:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:39:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:39:46,144 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-10-28 08:39:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:46,144 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:39:46,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:39:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 08:39:46,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:46,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:46,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:39:46,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1310881933, now seen corresponding path program 1 times [2020-10-28 08:39:46,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:46,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606012170] [2020-10-28 08:39:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:46,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 08:39:51,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:39:51,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:39:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:51,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:51,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:39:51,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:51,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:39:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:39:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:51,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:51,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:39:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:51,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:39:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 08:39:51,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606012170] [2020-10-28 08:39:51,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:51,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:51,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399502614] [2020-10-28 08:39:51,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:51,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:51,369 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 08:39:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:51,531 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-28 08:39:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:51,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 08:39:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:51,533 INFO L225 Difference]: With dead ends: 55 [2020-10-28 08:39:51,533 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:39:51,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:39:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:39:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:39:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:39:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 08:39:51,550 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 44 [2020-10-28 08:39:51,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:51,551 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 08:39:51,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 08:39:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 08:39:51,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:51,555 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:51,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:39:51,555 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash 869573329, now seen corresponding path program 2 times [2020-10-28 08:39:51,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:51,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849854528] [2020-10-28 08:39:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 08:39:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 08:39:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 08:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:56,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:39:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:56,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 08:39:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:39:56,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:39:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:56,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:56,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:56,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:39:56,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:56,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 08:39:56,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849854528] [2020-10-28 08:39:56,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:56,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:56,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372327841] [2020-10-28 08:39:56,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:56,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:56,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:56,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:56,788 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 08:39:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:56,873 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-28 08:39:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:56,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 08:39:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:56,877 INFO L225 Difference]: With dead ends: 53 [2020-10-28 08:39:56,877 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 08:39:56,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 08:39:56,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 08:39:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:39:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 08:39:56,887 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 08:39:56,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:56,892 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 08:39:56,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 08:39:56,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:39:56,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:56,896 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:56,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:39:56,896 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:56,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:56,897 INFO L82 PathProgramCache]: Analyzing trace with hash 163608655, now seen corresponding path program 1 times [2020-10-28 08:39:56,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:56,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556384131] [2020-10-28 08:39:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:40:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:40:01,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:01,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:01,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:01,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:01,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:01,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:01,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:01,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:01,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:01,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:01,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:01,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 08:40:02,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:40:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:02,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:02,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:40:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:02,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:02,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:02,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-28 08:40:02,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556384131] [2020-10-28 08:40:02,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:02,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:02,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500974293] [2020-10-28 08:40:02,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:02,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:02,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:02,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:02,112 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 08:40:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:02,218 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-28 08:40:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:02,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 08:40:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:02,221 INFO L225 Difference]: With dead ends: 62 [2020-10-28 08:40:02,222 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:40:02,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:40:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:40:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:40:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 08:40:02,238 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 08:40:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:02,239 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 08:40:02,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 08:40:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 08:40:02,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:02,240 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:02,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:40:02,243 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:02,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1555946191, now seen corresponding path program 2 times [2020-10-28 08:40:02,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:02,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323083626] [2020-10-28 08:40:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:02,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 08:40:07,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:40:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 08:40:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:07,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:07,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:07,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:40:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:07,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:40:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:07,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:40:07,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:40:07,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:07,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 08:40:07,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323083626] [2020-10-28 08:40:07,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:07,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:07,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328696037] [2020-10-28 08:40:07,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:07,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:07,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:07,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:07,415 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 08:40:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:07,565 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-28 08:40:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:07,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-28 08:40:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:07,566 INFO L225 Difference]: With dead ends: 63 [2020-10-28 08:40:07,566 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:40:07,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:40:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 08:40:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:40:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 08:40:07,573 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-28 08:40:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:07,574 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 08:40:07,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 08:40:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 08:40:07,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:07,575 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:07,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:40:07,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:07,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1713465073, now seen corresponding path program 3 times [2020-10-28 08:40:07,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:07,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638598596] [2020-10-28 08:40:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:40:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:40:12,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 08:40:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:40:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 08:40:12,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638598596] [2020-10-28 08:40:12,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:12,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:40:12,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921792698] [2020-10-28 08:40:12,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:40:12,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:40:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:12,799 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 08:40:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:12,877 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 08:40:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:40:12,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 08:40:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:12,880 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:40:12,880 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:40:12,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:40:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:40:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 08:40:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:40:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 08:40:12,890 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 08:40:12,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:12,890 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 08:40:12,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:40:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 08:40:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:40:12,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:12,892 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:12,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:40:12,895 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1890558195, now seen corresponding path program 4 times [2020-10-28 08:40:12,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:12,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294531156] [2020-10-28 08:40:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:17,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:17,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:40:17,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:17,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:17,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:17,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:17,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:17,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:17,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 08:40:17,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:17,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:40:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:40:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:40:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:40:18,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:18,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:40:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 08:40:18,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294531156] [2020-10-28 08:40:18,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:18,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:18,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523002976] [2020-10-28 08:40:18,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:18,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:18,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:18,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:18,132 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 08:40:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:18,313 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 08:40:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:18,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 08:40:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:18,314 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:40:18,314 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:40:18,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:40:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:40:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:40:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:40:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 08:40:18,321 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 08:40:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:18,321 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 08:40:18,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 08:40:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:40:18,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:18,322 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:18,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:40:18,323 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1878252779, now seen corresponding path program 5 times [2020-10-28 08:40:18,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:18,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014291340] [2020-10-28 08:40:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:23,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 08:40:23,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:23,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:40:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:40:23,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:23,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:40:23,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:23,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 08:40:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014291340] [2020-10-28 08:40:23,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:23,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:23,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335317008] [2020-10-28 08:40:23,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:23,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:23,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:23,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:23,573 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 08:40:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:23,822 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-28 08:40:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:23,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-28 08:40:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:23,824 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:23,824 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 08:40:23,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:40:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 08:40:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 08:40:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:40:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 08:40:23,830 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-28 08:40:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:23,831 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 08:40:23,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 08:40:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:40:23,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:23,832 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:23,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:40:23,832 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1464222647, now seen corresponding path program 6 times [2020-10-28 08:40:23,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:23,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741962697] [2020-10-28 08:40:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:23,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:28,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:28,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:28,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:28,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:40:28,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:28,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:29,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:29,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:40:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:29,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:29,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741962697] [2020-10-28 08:40:29,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:29,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:29,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319344374] [2020-10-28 08:40:29,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:29,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:29,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:29,082 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 08:40:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:29,206 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-28 08:40:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:29,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 08:40:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:29,208 INFO L225 Difference]: With dead ends: 80 [2020-10-28 08:40:29,208 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 08:40:29,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 08:40:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 08:40:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 08:40:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 08:40:29,215 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 74 [2020-10-28 08:40:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:29,215 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 08:40:29,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 08:40:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:40:29,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:29,216 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:29,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:40:29,217 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1908690005, now seen corresponding path program 7 times [2020-10-28 08:40:29,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:29,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565482893] [2020-10-28 08:40:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:40:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:34,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:34,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:40:34,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 08:40:34,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:34,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 08:40:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:34,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:40:34,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:40:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:34,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565482893] [2020-10-28 08:40:34,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:34,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:34,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836124813] [2020-10-28 08:40:34,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:34,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:34,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:34,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:34,466 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 08:40:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:34,559 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-28 08:40:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:34,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 08:40:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:34,561 INFO L225 Difference]: With dead ends: 82 [2020-10-28 08:40:34,561 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:40:34,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:40:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:40:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:40:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 08:40:34,569 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-28 08:40:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:34,569 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 08:40:34,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 08:40:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 08:40:34,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:34,570 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:34,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:40:34,570 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:34,571 INFO L82 PathProgramCache]: Analyzing trace with hash 454908557, now seen corresponding path program 8 times [2020-10-28 08:40:34,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:34,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000527818] [2020-10-28 08:40:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:39,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:39,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:39,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:39,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:39,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 08:40:39,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:40:39,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:40:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:40:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 08:40:39,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000527818] [2020-10-28 08:40:39,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:39,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:39,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106817238] [2020-10-28 08:40:39,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:39,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:39,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:39,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:39,863 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 08:40:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:39,972 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-28 08:40:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:39,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 08:40:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:39,973 INFO L225 Difference]: With dead ends: 75 [2020-10-28 08:40:39,973 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 08:40:39,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 08:40:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 08:40:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 08:40:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 08:40:39,980 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 08:40:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:39,981 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 08:40:39,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 08:40:39,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:40:39,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:39,982 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:39,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:40:39,982 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash 657705227, now seen corresponding path program 9 times [2020-10-28 08:40:39,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:39,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538608944] [2020-10-28 08:40:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:40:45,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:40:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 08:40:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:40:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:45,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 08:40:45,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:40:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:45,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:45,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 08:40:45,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:45,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 08:40:45,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538608944] [2020-10-28 08:40:45,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:45,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:45,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695220210] [2020-10-28 08:40:45,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:45,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:45,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:45,371 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 08:40:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:45,759 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-28 08:40:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:45,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 08:40:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:45,761 INFO L225 Difference]: With dead ends: 87 [2020-10-28 08:40:45,761 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 08:40:45,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:40:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 08:40:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 08:40:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 08:40:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 08:40:45,768 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 08:40:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:45,768 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 08:40:45,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 08:40:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 08:40:45,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:45,769 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:45,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:40:45,770 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1984573289, now seen corresponding path program 10 times [2020-10-28 08:40:45,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:45,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837428853] [2020-10-28 08:40:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:40:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:50,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:50,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:50,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:50,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:40:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 08:40:51,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:51,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:40:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:51,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:51,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 08:40:51,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:51,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-28 08:40:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837428853] [2020-10-28 08:40:51,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:51,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:51,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266211406] [2020-10-28 08:40:51,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:51,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:51,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:51,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:51,245 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 08:40:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:51,594 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-28 08:40:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:51,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 08:40:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:51,595 INFO L225 Difference]: With dead ends: 91 [2020-10-28 08:40:51,595 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:40:51,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:40:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:40:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 08:40:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:40:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 08:40:51,602 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-28 08:40:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:51,602 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 08:40:51,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 08:40:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 08:40:51,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:51,604 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:51,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:40:51,604 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:51,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1027238073, now seen corresponding path program 11 times [2020-10-28 08:40:51,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:51,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582566259] [2020-10-28 08:40:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 08:40:56,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:40:56,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:40:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:56,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 08:40:56,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:40:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:56,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:56,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:56,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 08:40:56,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:56,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:40:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:57,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:57,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 08:40:57,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:57,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:40:57,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582566259] [2020-10-28 08:40:57,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:57,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:57,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580863639] [2020-10-28 08:40:57,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:57,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:57,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:57,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:57,068 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 08:40:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:57,184 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-28 08:40:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:57,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 08:40:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:57,185 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:40:57,186 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 08:40:57,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 08:40:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 08:40:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:40:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 08:40:57,199 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 92 [2020-10-28 08:40:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:57,199 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 08:40:57,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 08:40:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 08:40:57,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:57,201 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:40:57,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:40:57,201 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -913229271, now seen corresponding path program 12 times [2020-10-28 08:40:57,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:57,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266708324] [2020-10-28 08:40:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:41:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:41:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:41:02,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:41:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:02,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 08:41:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:02,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:02,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:02,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:41:02,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:41:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:41:02,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:02,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-28 08:41:02,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266708324] [2020-10-28 08:41:02,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:02,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:41:02,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657150173] [2020-10-28 08:41:02,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:41:02,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:41:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:02,594 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 08:41:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:02,742 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-28 08:41:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:41:02,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-28 08:41:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:02,744 INFO L225 Difference]: With dead ends: 98 [2020-10-28 08:41:02,744 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:41:02,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:41:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:41:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:41:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 08:41:02,750 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-28 08:41:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:02,751 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 08:41:02,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:41:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 08:41:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 08:41:02,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:02,752 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:02,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:41:02,752 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1275047051, now seen corresponding path program 13 times [2020-10-28 08:41:02,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:02,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581117916] [2020-10-28 08:41:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 08:41:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 08:41:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:41:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 08:41:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:41:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:41:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:07,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:07,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 08:41:07,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:07,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:41:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:08,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:41:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:08,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 08:41:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581117916] [2020-10-28 08:41:08,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:08,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:41:08,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987742152] [2020-10-28 08:41:08,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:41:08,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:41:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:08,077 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 08:41:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:08,202 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 08:41:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:41:08,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 08:41:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:08,204 INFO L225 Difference]: With dead ends: 89 [2020-10-28 08:41:08,204 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:41:08,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:41:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:41:08,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:41:08,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:41:08,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 08:41:08,211 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 08:41:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:08,211 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 08:41:08,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:41:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 08:41:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 08:41:08,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:08,212 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:08,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:41:08,213 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1240423543, now seen corresponding path program 14 times [2020-10-28 08:41:08,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:08,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796433212] [2020-10-28 08:41:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 08:41:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:13,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:41:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-28 08:41:13,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796433212] [2020-10-28 08:41:13,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:13,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:13,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734338523] [2020-10-28 08:41:13,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:13,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:13,568 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 08:41:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:13,728 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-28 08:41:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:13,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 08:41:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:13,729 INFO L225 Difference]: With dead ends: 104 [2020-10-28 08:41:13,729 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:41:13,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:41:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 08:41:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:41:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 08:41:13,738 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 08:41:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:13,738 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 08:41:13,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 08:41:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 08:41:13,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:13,740 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:13,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:41:13,740 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1654975253, now seen corresponding path program 15 times [2020-10-28 08:41:13,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:13,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120356226] [2020-10-28 08:41:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 08:41:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:18,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:18,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:41:18,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:18,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:41:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:41:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:18,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:41:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:19,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:19,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:41:19,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:41:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:19,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:41:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-28 08:41:19,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120356226] [2020-10-28 08:41:19,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:19,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:41:19,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861630803] [2020-10-28 08:41:19,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:41:19,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:19,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:41:19,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:41:19,070 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 08:41:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:19,472 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-10-28 08:41:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:41:19,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-28 08:41:19,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:19,473 INFO L225 Difference]: With dead ends: 105 [2020-10-28 08:41:19,473 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:41:19,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:41:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:41:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 08:41:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 08:41:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 08:41:19,479 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-28 08:41:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:19,479 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 08:41:19,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:41:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 08:41:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 08:41:19,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:19,480 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:19,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:41:19,481 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:19,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1811271095, now seen corresponding path program 16 times [2020-10-28 08:41:19,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:19,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514071847] [2020-10-28 08:41:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:41:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:24,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:24,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:24,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:24,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:24,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:24,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:24,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 08:41:24,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:24,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:24,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:41:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:24,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:24,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:24,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 08:41:24,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:24,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 08:41:24,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514071847] [2020-10-28 08:41:24,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:24,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:41:24,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371194844] [2020-10-28 08:41:24,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:41:24,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:24,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:41:24,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:24,866 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 08:41:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:24,991 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-28 08:41:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:41:24,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 08:41:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:24,995 INFO L225 Difference]: With dead ends: 97 [2020-10-28 08:41:24,995 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:41:24,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:41:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:41:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 08:41:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 08:41:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 08:41:25,001 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 08:41:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:25,001 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 08:41:25,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:41:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 08:41:25,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 08:41:25,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:25,003 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:25,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:41:25,003 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:25,003 INFO L82 PathProgramCache]: Analyzing trace with hash -231654969, now seen corresponding path program 17 times [2020-10-28 08:41:25,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:25,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502944842] [2020-10-28 08:41:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:30,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:30,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:30,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:30,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:41:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:30,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:30,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:30,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:30,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:41:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 148 proven. 212 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-28 08:41:30,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502944842] [2020-10-28 08:41:30,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:30,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:30,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435744434] [2020-10-28 08:41:30,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:30,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:30,434 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 08:41:30,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:30,865 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-28 08:41:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:30,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 08:41:30,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:30,867 INFO L225 Difference]: With dead ends: 113 [2020-10-28 08:41:30,867 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 08:41:30,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:41:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 08:41:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 08:41:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:41:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 08:41:30,880 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 08:41:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:30,881 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 08:41:30,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 08:41:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 08:41:30,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:30,883 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:30,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:41:30,884 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash -785030875, now seen corresponding path program 18 times [2020-10-28 08:41:30,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:30,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108673441] [2020-10-28 08:41:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 08:41:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:35,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 08:41:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:36,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:41:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:36,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:36,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 08:41:36,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:36,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:36,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:41:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:36,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:36,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 08:41:36,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:36,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-28 08:41:36,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108673441] [2020-10-28 08:41:36,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:36,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:36,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897505439] [2020-10-28 08:41:36,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:36,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:36,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:36,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:36,477 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 08:41:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:36,930 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-28 08:41:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:36,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-28 08:41:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:36,931 INFO L225 Difference]: With dead ends: 117 [2020-10-28 08:41:36,932 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:41:36,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:41:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:41:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 08:41:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 08:41:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 08:41:36,938 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-28 08:41:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:36,939 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 08:41:36,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 08:41:36,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 08:41:36,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:36,940 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:36,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:41:36,940 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1431287293, now seen corresponding path program 19 times [2020-10-28 08:41:36,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:36,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541490582] [2020-10-28 08:41:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:41,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:42,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:42,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:42,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:42,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:41:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:41:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:41:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:42,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541490582] [2020-10-28 08:41:42,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:42,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:42,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544927295] [2020-10-28 08:41:42,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:42,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:42,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:42,501 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 08:41:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:42,649 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-28 08:41:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:42,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-28 08:41:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:42,650 INFO L225 Difference]: With dead ends: 122 [2020-10-28 08:41:42,650 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:41:42,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:41:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:41:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:41:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 08:41:42,660 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-28 08:41:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:42,660 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 08:41:42,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 08:41:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 08:41:42,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:42,662 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:42,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:41:42,663 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:42,663 INFO L82 PathProgramCache]: Analyzing trace with hash -367221275, now seen corresponding path program 20 times [2020-10-28 08:41:42,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:42,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282954302] [2020-10-28 08:41:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:42,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:47,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:47,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:47,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:41:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:47,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:47,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:47,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 08:41:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:47,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:41:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:48,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:48,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:41:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:48,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:48,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282954302] [2020-10-28 08:41:48,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:48,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:48,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886749665] [2020-10-28 08:41:48,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:48,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:48,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:48,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:48,169 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 08:41:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:48,333 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-10-28 08:41:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:48,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-28 08:41:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:48,335 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:41:48,335 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 08:41:48,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:48,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 08:41:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 08:41:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 08:41:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 08:41:48,345 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-28 08:41:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:48,345 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 08:41:48,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 08:41:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 08:41:48,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:48,347 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:48,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:41:48,348 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:48,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1994425, now seen corresponding path program 21 times [2020-10-28 08:41:48,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:48,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939800859] [2020-10-28 08:41:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:41:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:53,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:53,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:53,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:53,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:53,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:53,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:41:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:53,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:41:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 08:41:53,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939800859] [2020-10-28 08:41:53,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:53,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:41:53,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793884740] [2020-10-28 08:41:53,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:41:53,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:53,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:41:53,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:53,805 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 08:41:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:53,944 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-28 08:41:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:41:53,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 08:41:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:53,946 INFO L225 Difference]: With dead ends: 111 [2020-10-28 08:41:53,946 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 08:41:53,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 08:41:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 08:41:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 08:41:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 08:41:53,957 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 08:41:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:53,957 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 08:41:53,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:41:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 08:41:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 08:41:53,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:53,959 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:53,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:41:53,960 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:53,960 INFO L82 PathProgramCache]: Analyzing trace with hash -446176955, now seen corresponding path program 22 times [2020-10-28 08:41:53,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:53,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593952560] [2020-10-28 08:41:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:59,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:59,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:59,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:59,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:59,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:59,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:41:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:41:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:59,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:59,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 08:41:59,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:59,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:41:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 08:41:59,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:59,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-28 08:41:59,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593952560] [2020-10-28 08:41:59,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:59,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:41:59,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085527627] [2020-10-28 08:41:59,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:41:59,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:59,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:41:59,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:59,472 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 08:41:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:59,655 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2020-10-28 08:41:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:41:59,656 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 08:41:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:59,657 INFO L225 Difference]: With dead ends: 130 [2020-10-28 08:41:59,657 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 08:41:59,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 08:41:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 08:41:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:41:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 08:41:59,663 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 08:41:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:59,663 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 08:41:59,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:41:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 08:41:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 08:41:59,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:59,664 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:41:59,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:41:59,665 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1847872423, now seen corresponding path program 23 times [2020-10-28 08:41:59,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:59,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546534556] [2020-10-28 08:41:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:04,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:42:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:04,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:42:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:42:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 08:42:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:05,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:42:05,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 08:42:05,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:05,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:42:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-28 08:42:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2020-10-28 08:42:05,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546534556] [2020-10-28 08:42:05,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:05,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:42:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774107187] [2020-10-28 08:42:05,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:42:05,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:05,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:42:05,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:42:05,179 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 08:42:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:05,703 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-28 08:42:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:42:05,703 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2020-10-28 08:42:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:05,704 INFO L225 Difference]: With dead ends: 131 [2020-10-28 08:42:05,704 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 08:42:05,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:42:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 08:42:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 08:42:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:42:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 08:42:05,712 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-28 08:42:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:05,712 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 08:42:05,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:42:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 08:42:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 08:42:05,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:05,713 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:05,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:42:05,713 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:05,714 INFO L82 PathProgramCache]: Analyzing trace with hash -826922491, now seen corresponding path program 24 times [2020-10-28 08:42:05,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:05,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919772117] [2020-10-28 08:42:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:10,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:10,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 08:42:10,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:42:10,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:10,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:10,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:10,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:10,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:11,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:11,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:42:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 08:42:11,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919772117] [2020-10-28 08:42:11,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:11,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:42:11,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391699533] [2020-10-28 08:42:11,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:42:11,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:11,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:42:11,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:11,246 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 08:42:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:11,325 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-28 08:42:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:42:11,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 08:42:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:11,327 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:42:11,328 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 08:42:11,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:42:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 08:42:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 08:42:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:42:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 08:42:11,335 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 08:42:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:11,335 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 08:42:11,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:42:11,336 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 08:42:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 08:42:11,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:11,337 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:11,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:42:11,337 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1972619907, now seen corresponding path program 25 times [2020-10-28 08:42:11,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:11,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137760350] [2020-10-28 08:42:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:16,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 08:42:16,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 08:42:16,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:16,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:42:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:16,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:16,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:16,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 08:42:16,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:16,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:16,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:16,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:16,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:42:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:42:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 08:42:16,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137760350] [2020-10-28 08:42:16,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:16,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:16,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105546224] [2020-10-28 08:42:16,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:16,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:16,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:16,878 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 08:42:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:17,457 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-28 08:42:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:17,458 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 08:42:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:17,459 INFO L225 Difference]: With dead ends: 139 [2020-10-28 08:42:17,459 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:42:17,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:42:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:42:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 08:42:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:42:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 08:42:17,466 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 08:42:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:17,466 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 08:42:17,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 08:42:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 08:42:17,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:17,468 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:17,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:42:17,468 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash 634008289, now seen corresponding path program 26 times [2020-10-28 08:42:17,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:17,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8070093] [2020-10-28 08:42:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 08:42:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:22,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:22,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:22,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:22,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 08:42:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:22,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:42:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 08:42:23,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8070093] [2020-10-28 08:42:23,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:23,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:23,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494822951] [2020-10-28 08:42:23,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:23,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:23,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:23,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:23,096 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 08:42:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:23,717 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-28 08:42:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:23,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 08:42:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:23,718 INFO L225 Difference]: With dead ends: 143 [2020-10-28 08:42:23,718 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:42:23,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:42:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:42:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 08:42:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:42:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 08:42:23,730 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 08:42:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:23,730 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 08:42:23,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 08:42:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 08:42:23,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:23,732 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:23,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:42:23,732 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1224139585, now seen corresponding path program 27 times [2020-10-28 08:42:23,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:23,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421254052] [2020-10-28 08:42:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:28,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:28,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:28,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:28,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:42:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:28,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:29,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:29,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:29,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 08:42:29,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:29,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:42:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 08:42:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:29,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:42:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:29,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421254052] [2020-10-28 08:42:29,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:29,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:29,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374127130] [2020-10-28 08:42:29,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:29,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:29,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:29,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:29,436 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 08:42:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:29,627 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-28 08:42:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:29,628 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 08:42:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:29,629 INFO L225 Difference]: With dead ends: 148 [2020-10-28 08:42:29,629 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 08:42:29,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 08:42:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 08:42:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 08:42:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 08:42:29,637 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 08:42:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:29,637 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 08:42:29,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 08:42:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 08:42:29,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:29,638 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:29,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:42:29,638 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:29,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1154043487, now seen corresponding path program 28 times [2020-10-28 08:42:29,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:29,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304917155] [2020-10-28 08:42:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:34,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:34,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 08:42:34,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 08:42:34,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:34,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:42:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:35,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:35,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:42:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:42:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:35,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:35,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:35,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 08:42:35,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:35,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:35,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304917155] [2020-10-28 08:42:35,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:35,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:35,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394858894] [2020-10-28 08:42:35,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:35,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:35,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:35,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:35,372 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 08:42:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:35,529 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-28 08:42:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:35,530 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 08:42:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:35,531 INFO L225 Difference]: With dead ends: 150 [2020-10-28 08:42:35,531 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 08:42:35,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 08:42:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 08:42:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:42:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 08:42:35,541 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 08:42:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:35,541 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 08:42:35,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 08:42:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 08:42:35,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:35,542 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:35,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:42:35,543 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1783797251, now seen corresponding path program 29 times [2020-10-28 08:42:35,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:35,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951867496] [2020-10-28 08:42:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:40,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:40,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 08:42:40,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:40,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 08:42:40,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:40,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:42:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 08:42:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:42:40,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:40,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:41,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 08:42:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:42:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:41,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 08:42:41,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 08:42:41,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951867496] [2020-10-28 08:42:41,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:41,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:42:41,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509511478] [2020-10-28 08:42:41,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:42:41,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:41,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:42:41,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:41,213 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 08:42:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:41,363 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-28 08:42:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:42:41,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 08:42:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:41,365 INFO L225 Difference]: With dead ends: 133 [2020-10-28 08:42:41,365 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 08:42:41,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 08:42:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 08:42:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 08:42:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 08:42:41,371 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 08:42:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:41,372 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 08:42:41,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:42:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 08:42:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 08:42:41,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:41,373 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:41,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:42:41,373 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:41,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:41,373 INFO L82 PathProgramCache]: Analyzing trace with hash 653541121, now seen corresponding path program 30 times [2020-10-28 08:42:41,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:41,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432051589] [2020-10-28 08:42:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 08:42:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:46,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:46,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:46,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:46,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:46,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:46,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:46,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:42:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:46,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:46,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 08:42:46,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:46,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:42:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:46,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:46,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:46,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 08:42:46,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:46,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:42:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-28 08:42:47,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432051589] [2020-10-28 08:42:47,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:47,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:47,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488620981] [2020-10-28 08:42:47,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:47,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:47,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:47,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:47,124 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 08:42:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:47,331 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-28 08:42:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:47,331 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 08:42:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:47,332 INFO L225 Difference]: With dead ends: 156 [2020-10-28 08:42:47,333 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:42:47,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:42:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 08:42:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 08:42:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 08:42:47,340 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 08:42:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:47,340 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 08:42:47,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 08:42:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 08:42:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:47,341 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 14, 14, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:47,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:42:47,342 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1659052643, now seen corresponding path program 31 times [2020-10-28 08:42:47,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:47,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247428048] [2020-10-28 08:42:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 08:42:52,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 08:42:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:52,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:52,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:42:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:52,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 08:42:52,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:52,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 08:42:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:52,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 08:42:52,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:42:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 08:42:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:53,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1874 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-28 08:42:53,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247428048] [2020-10-28 08:42:53,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:53,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:42:53,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326433653] [2020-10-28 08:42:53,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:42:53,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:53,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:42:53,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:53,098 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 08:42:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:53,260 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-10-28 08:42:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:42:53,261 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-10-28 08:42:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:53,262 INFO L225 Difference]: With dead ends: 158 [2020-10-28 08:42:53,262 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:42:53,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:42:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 08:42:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 08:42:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 08:42:53,273 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 156 [2020-10-28 08:42:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:53,273 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 08:42:53,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:42:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 08:42:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 08:42:53,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:53,275 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:53,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:42:53,275 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:53,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1587983685, now seen corresponding path program 32 times [2020-10-28 08:42:53,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:53,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680340856] [2020-10-28 08:42:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:53,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:58,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 08:42:58,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:58,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 08:42:58,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:58,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 08:42:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:58,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:58,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:58,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:58,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:58,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:42:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:58,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 08:42:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:58,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:58,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:42:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:58,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:58,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 368 proven. 537 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2020-10-28 08:42:59,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680340856] [2020-10-28 08:42:59,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:59,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:59,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333925860] [2020-10-28 08:42:59,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:59,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:59,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:59,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:59,014 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 08:42:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:59,679 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2020-10-28 08:42:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:59,679 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 158 [2020-10-28 08:42:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:59,681 INFO L225 Difference]: With dead ends: 159 [2020-10-28 08:42:59,681 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 08:42:59,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:42:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 08:42:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 08:42:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 08:42:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 08:42:59,688 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-28 08:42:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 08:42:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 08:42:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 08:42:59,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:59,689 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:59,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:42:59,690 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:59,690 INFO L82 PathProgramCache]: Analyzing trace with hash -429219037, now seen corresponding path program 33 times [2020-10-28 08:42:59,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:59,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239646071] [2020-10-28 08:42:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:43:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 08:43:04,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:43:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:05,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-28 08:43:05,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 08:43:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 08:43:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:43:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:43:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:43:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:43:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 08:43:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:43:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2020-10-28 08:43:05,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239646071] [2020-10-28 08:43:05,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:05,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:43:05,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644283803] [2020-10-28 08:43:05,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:43:05,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:05,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:43:05,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:43:05,620 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 08:43:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:06,308 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-28 08:43:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:43:06,309 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-28 08:43:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:06,310 INFO L225 Difference]: With dead ends: 163 [2020-10-28 08:43:06,310 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 08:43:06,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:43:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 08:43:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 08:43:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 08:43:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 08:43:06,318 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-28 08:43:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:06,318 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 08:43:06,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:43:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 08:43:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 08:43:06,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:06,320 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:06,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:43:06,320 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:06,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1668287871, now seen corresponding path program 34 times [2020-10-28 08:43:06,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:06,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659349904] [2020-10-28 08:43:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:43:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:11,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:11,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:11,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 08:43:11,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:11,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:11,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:43:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 08:43:12,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659349904] [2020-10-28 08:43:12,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:12,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:43:12,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087222571] [2020-10-28 08:43:12,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:43:12,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:12,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:43:12,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:12,125 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 08:43:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:12,265 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-28 08:43:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:43:12,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 08:43:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:12,267 INFO L225 Difference]: With dead ends: 147 [2020-10-28 08:43:12,268 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 08:43:12,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:43:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 08:43:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 08:43:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:43:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 08:43:12,274 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 08:43:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:12,275 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 08:43:12,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:43:12,275 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 08:43:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 08:43:12,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:12,276 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:12,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:43:12,276 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:12,277 INFO L82 PathProgramCache]: Analyzing trace with hash -59538433, now seen corresponding path program 35 times [2020-10-28 08:43:12,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:12,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737324179] [2020-10-28 08:43:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 08:43:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:17,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:17,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:17,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:17,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:43:17,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:17,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:17,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:17,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:17,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 08:43:17,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:17,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:43:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:17,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:17,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 08:43:17,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:17,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:43:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:18,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:43:18,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 08:43:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:18,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:43:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2020-10-28 08:43:18,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737324179] [2020-10-28 08:43:18,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:18,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:18,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469042276] [2020-10-28 08:43:18,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:18,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:18,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:18,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:18,241 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 08:43:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:19,024 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-28 08:43:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:19,025 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 08:43:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:19,026 INFO L225 Difference]: With dead ends: 171 [2020-10-28 08:43:19,026 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 08:43:19,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:43:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 08:43:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 08:43:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:43:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 08:43:19,035 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 08:43:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:19,035 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 08:43:19,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 08:43:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 08:43:19,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:19,036 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:19,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:43:19,037 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 249191773, now seen corresponding path program 36 times [2020-10-28 08:43:19,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:19,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353267348] [2020-10-28 08:43:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:19,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 08:43:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 08:43:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:24,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:43:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:43:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:43:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:24,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:24,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:43:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-28 08:43:24,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:24,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:43:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 08:43:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 08:43:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:43:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2020-10-28 08:43:25,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353267348] [2020-10-28 08:43:25,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:25,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:43:25,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788080800] [2020-10-28 08:43:25,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:43:25,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:25,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:43:25,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:25,298 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-28 08:43:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:25,536 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-28 08:43:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:43:25,536 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 178 [2020-10-28 08:43:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:25,537 INFO L225 Difference]: With dead ends: 176 [2020-10-28 08:43:25,537 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 08:43:25,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:43:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 08:43:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 08:43:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:43:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-28 08:43:25,544 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 178 [2020-10-28 08:43:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:25,545 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-28 08:43:25,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:43:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-28 08:43:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 08:43:25,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:25,548 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:25,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 08:43:25,548 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1334688447, now seen corresponding path program 37 times [2020-10-28 08:43:25,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:25,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59146262] [2020-10-28 08:43:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 08:43:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:43:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:30,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:43:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 08:43:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking...