/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/eca-rers2012/Problem16_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:21:52,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:21:52,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:21:52,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:21:52,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:21:52,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:21:52,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:21:52,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:21:52,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:21:52,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:21:52,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:21:52,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:21:52,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:21:52,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:21:52,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:21:52,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:21:52,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:21:52,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:21:52,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:21:52,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:21:52,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:21:52,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:21:52,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:21:52,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:21:52,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:21:52,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:21:52,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:21:52,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:21:52,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:21:52,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:21:52,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:21:52,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:21:52,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:21:52,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:21:52,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:21:52,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:21:52,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:21:52,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:21:52,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:21:52,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:21:52,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:21:52,691 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 13:21:52,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:21:52,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:21:52,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:21:52,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:21:52,732 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:21:52,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:21:52,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:21:52,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:21:52,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:21:52,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:21:52,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:21:52,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:21:52,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:21:52,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:21:52,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:21:52,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:21:52,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:21:52,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:21:52,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:21:52,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:21:52,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:21:52,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:52,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:21:52,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:21:52,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:21:52,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:21:52,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:21:52,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:21:52,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:21:52,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:21:53,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:21:53,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:21:53,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:21:53,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:21:53,163 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:21:53,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label27.c [2020-10-28 13:21:53,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad6fe3f8e/9b2e1911107f4e92af4cb6be4db13a1d/FLAG4ede7bed8 [2020-10-28 13:21:54,205 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:21:54,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label27.c [2020-10-28 13:21:54,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad6fe3f8e/9b2e1911107f4e92af4cb6be4db13a1d/FLAG4ede7bed8 [2020-10-28 13:21:54,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad6fe3f8e/9b2e1911107f4e92af4cb6be4db13a1d [2020-10-28 13:21:54,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:21:54,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:21:54,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:54,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:21:54,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:21:54,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:54" (1/1) ... [2020-10-28 13:21:54,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc51e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:54, skipping insertion in model container [2020-10-28 13:21:54,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:54" (1/1) ... [2020-10-28 13:21:54,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:21:54,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:21:55,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:55,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:21:55,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:55,729 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:21:55,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55 WrapperNode [2020-10-28 13:21:55,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:55,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:21:55,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:21:55,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:21:55,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (1/1) ... [2020-10-28 13:21:55,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:21:55,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:21:55,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:21:55,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:21:55,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (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 13:21:56,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:21:56,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:21:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:21:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:21:56,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:21:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:21:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:21:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:21:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:21:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:21:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:21:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:21:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:21:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:21:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:21:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:21:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:21:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:21:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:21:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:21:56,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:21:58,928 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:21:58,929 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:21:58,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:58 BoogieIcfgContainer [2020-10-28 13:21:58,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:21:58,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:21:58,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:21:58,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:21:58,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:21:54" (1/3) ... [2020-10-28 13:21:58,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee1b308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:58, skipping insertion in model container [2020-10-28 13:21:58,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55" (2/3) ... [2020-10-28 13:21:58,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee1b308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:58, skipping insertion in model container [2020-10-28 13:21:58,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:58" (3/3) ... [2020-10-28 13:21:58,941 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label27.c [2020-10-28 13:21:58,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:21:58,961 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:21:58,975 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:21:59,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:21:59,007 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:21:59,007 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:21:59,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:21:59,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:21:59,007 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:21:59,008 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:21:59,008 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:21:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:21:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 13:21:59,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:59,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:59,043 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:59,049 INFO L82 PathProgramCache]: Analyzing trace with hash -882991196, now seen corresponding path program 1 times [2020-10-28 13:21:59,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:59,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517249853] [2020-10-28 13:21:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:59,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:21:59,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-28 13:21:59,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:21:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 13:21:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:21:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:00,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:00,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:00,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:22:00,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:00,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:00,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517249853] [2020-10-28 13:22:00,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:22:00,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673669506] [2020-10-28 13:22:00,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:22:00,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:22:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:22:00,067 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:22:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:04,780 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:22:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:22:04,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 13:22:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:04,810 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:22:04,811 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:22:04,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 13:22:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:22:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:22:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:22:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:22:04,932 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 19 [2020-10-28 13:22:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:04,932 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:22:04,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:22:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:22:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 13:22:04,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:04,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:04,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:22:04,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1755422107, now seen corresponding path program 1 times [2020-10-28 13:22:04,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:04,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995281874] [2020-10-28 13:22:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:22:06,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-28 13:22:06,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:06,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:22:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:06,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:06,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:22:06,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:06,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:06,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:06,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:22:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:22:06,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:06,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:22:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:06,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995281874] [2020-10-28 13:22:06,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:06,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:22:06,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291734328] [2020-10-28 13:22:06,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:06,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:06,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:06,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:06,619 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:22:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:12,297 INFO L93 Difference]: Finished difference Result 2092 states and 3103 transitions. [2020-10-28 13:22:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:22:12,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-28 13:22:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:12,316 INFO L225 Difference]: With dead ends: 2092 [2020-10-28 13:22:12,316 INFO L226 Difference]: Without dead ends: 1405 [2020-10-28 13:22:12,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-10-28 13:22:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1384. [2020-10-28 13:22:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-28 13:22:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1819 transitions. [2020-10-28 13:22:12,420 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1819 transitions. Word has length 95 [2020-10-28 13:22:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:12,421 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1819 transitions. [2020-10-28 13:22:12,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1819 transitions. [2020-10-28 13:22:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 13:22:12,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:12,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 13:22:12,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:22:12,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:12,440 INFO L82 PathProgramCache]: Analyzing trace with hash -714646826, now seen corresponding path program 1 times [2020-10-28 13:22:12,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:12,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270491488] [2020-10-28 13:22:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:22:16,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:22:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-10-28 13:22:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:22:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:16,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:22:16,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:16,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:22:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:16,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:22:16,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 13:22:16,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:16,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:22:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 78 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:22:17,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270491488] [2020-10-28 13:22:17,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:17,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:17,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480573248] [2020-10-28 13:22:17,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:17,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:17,072 INFO L87 Difference]: Start difference. First operand 1384 states and 1819 transitions. Second operand 7 states. [2020-10-28 13:22:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:23,133 INFO L93 Difference]: Finished difference Result 3517 states and 4804 transitions. [2020-10-28 13:22:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:23,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-28 13:22:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:23,148 INFO L225 Difference]: With dead ends: 3517 [2020-10-28 13:22:23,148 INFO L226 Difference]: Without dead ends: 2139 [2020-10-28 13:22:23,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-10-28 13:22:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2106. [2020-10-28 13:22:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-28 13:22:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2655 transitions. [2020-10-28 13:22:23,230 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2655 transitions. Word has length 182 [2020-10-28 13:22:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:23,231 INFO L481 AbstractCegarLoop]: Abstraction has 2106 states and 2655 transitions. [2020-10-28 13:22:23,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2655 transitions. [2020-10-28 13:22:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 13:22:23,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:23,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:23,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:22:23,237 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -846692200, now seen corresponding path program 1 times [2020-10-28 13:22:23,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:23,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635135070] [2020-10-28 13:22:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 13:22:26,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:22:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3201 [2020-10-28 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:22:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:26,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:26,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:22:26,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:26,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:22:26,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:26,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:22:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:22:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:26,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:27,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:27,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:27,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 13:22:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:27,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:22:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:27,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635135070] [2020-10-28 13:22:27,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:27,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:27,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126337059] [2020-10-28 13:22:27,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:27,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:27,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:27,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:27,248 INFO L87 Difference]: Start difference. First operand 2106 states and 2655 transitions. Second operand 7 states. [2020-10-28 13:22:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:32,723 INFO L93 Difference]: Finished difference Result 5303 states and 6933 transitions. [2020-10-28 13:22:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:22:32,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-28 13:22:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:32,743 INFO L225 Difference]: With dead ends: 5303 [2020-10-28 13:22:32,743 INFO L226 Difference]: Without dead ends: 3203 [2020-10-28 13:22:32,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-10-28 13:22:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3164. [2020-10-28 13:22:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-28 13:22:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 3863 transitions. [2020-10-28 13:22:32,874 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 3863 transitions. Word has length 248 [2020-10-28 13:22:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:32,875 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 3863 transitions. [2020-10-28 13:22:32,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 3863 transitions. [2020-10-28 13:22:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 13:22:32,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:32,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:32,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:22:32,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash 172821593, now seen corresponding path program 1 times [2020-10-28 13:22:32,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:32,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387754994] [2020-10-28 13:22:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-28 13:22:36,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:22:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3364 [2020-10-28 13:22:36,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:22:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:22:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:22:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:36,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:22:36,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-28 13:22:36,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:36,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:22:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:22:37,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387754994] [2020-10-28 13:22:37,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:37,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:22:37,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036180607] [2020-10-28 13:22:37,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:37,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:37,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:37,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:37,321 INFO L87 Difference]: Start difference. First operand 3164 states and 3863 transitions. Second operand 7 states. [2020-10-28 13:22:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:42,496 INFO L93 Difference]: Finished difference Result 7095 states and 8632 transitions. [2020-10-28 13:22:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:42,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-28 13:22:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:42,518 INFO L225 Difference]: With dead ends: 7095 [2020-10-28 13:22:42,519 INFO L226 Difference]: Without dead ends: 3937 [2020-10-28 13:22:42,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2020-10-28 13:22:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3877. [2020-10-28 13:22:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-10-28 13:22:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 4638 transitions. [2020-10-28 13:22:42,654 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 4638 transitions. Word has length 268 [2020-10-28 13:22:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:42,655 INFO L481 AbstractCegarLoop]: Abstraction has 3877 states and 4638 transitions. [2020-10-28 13:22:42,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 4638 transitions. [2020-10-28 13:22:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-28 13:22:42,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:42,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:42,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:22:42,665 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:42,666 INFO L82 PathProgramCache]: Analyzing trace with hash 281041200, now seen corresponding path program 1 times [2020-10-28 13:22:42,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:42,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802197937] [2020-10-28 13:22:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-28 13:22:47,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:47,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4452 [2020-10-28 13:22:47,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:22:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:22:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:22:47,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:22:47,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:22:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:22:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:22:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:22:48,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-28 13:22:48,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:22:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:48,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802197937] [2020-10-28 13:22:48,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:48,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:48,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561181494] [2020-10-28 13:22:48,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:48,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:48,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:48,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:48,505 INFO L87 Difference]: Start difference. First operand 3877 states and 4638 transitions. Second operand 7 states. [2020-10-28 13:22:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:54,001 INFO L93 Difference]: Finished difference Result 9202 states and 11527 transitions. [2020-10-28 13:22:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:22:54,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-28 13:22:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:54,027 INFO L225 Difference]: With dead ends: 9202 [2020-10-28 13:22:54,028 INFO L226 Difference]: Without dead ends: 4897 [2020-10-28 13:22:54,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:22:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4897 states. [2020-10-28 13:22:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4897 to 4842. [2020-10-28 13:22:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2020-10-28 13:22:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 5233 transitions. [2020-10-28 13:22:54,161 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 5233 transitions. Word has length 383 [2020-10-28 13:22:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:54,162 INFO L481 AbstractCegarLoop]: Abstraction has 4842 states and 5233 transitions. [2020-10-28 13:22:54,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 5233 transitions. [2020-10-28 13:22:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-28 13:22:54,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:54,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:54,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:22:54,170 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash 582529000, now seen corresponding path program 1 times [2020-10-28 13:22:54,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:54,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578921227] [2020-10-28 13:22:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:55,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:55,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-28 13:22:55,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:55,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-28 13:22:55,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:55,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:55,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:55,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:22:55,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:22:55,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:56,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:56,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:22:56,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:22:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:22:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:57,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578921227] [2020-10-28 13:22:57,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:57,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:57,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584329002] [2020-10-28 13:22:57,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:57,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:57,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:57,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:57,161 INFO L87 Difference]: Start difference. First operand 4842 states and 5233 transitions. Second operand 7 states. [2020-10-28 13:23:01,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:01,443 INFO L93 Difference]: Finished difference Result 10725 states and 11790 transitions. [2020-10-28 13:23:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:01,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-28 13:23:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:01,482 INFO L225 Difference]: With dead ends: 10725 [2020-10-28 13:23:01,482 INFO L226 Difference]: Without dead ends: 6226 [2020-10-28 13:23:01,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:23:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6226 states. [2020-10-28 13:23:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6226 to 5877. [2020-10-28 13:23:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5877 states. [2020-10-28 13:23:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 6325 transitions. [2020-10-28 13:23:01,649 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 6325 transitions. Word has length 387 [2020-10-28 13:23:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:01,650 INFO L481 AbstractCegarLoop]: Abstraction has 5877 states and 6325 transitions. [2020-10-28 13:23:01,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 6325 transitions. [2020-10-28 13:23:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-28 13:23:01,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:01,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:01,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:23:01,664 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1320761800, now seen corresponding path program 1 times [2020-10-28 13:23:01,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:01,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610520196] [2020-10-28 13:23:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:06,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:06,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-28 13:23:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4752 [2020-10-28 13:23:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:23:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:23:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:23:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 13:23:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:07,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:23:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:07,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:23:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:23:08,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610520196] [2020-10-28 13:23:08,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:08,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:08,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577044495] [2020-10-28 13:23:08,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:08,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:08,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:08,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:08,546 INFO L87 Difference]: Start difference. First operand 5877 states and 6325 transitions. Second operand 7 states. [2020-10-28 13:23:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:12,765 INFO L93 Difference]: Finished difference Result 11435 states and 12346 transitions. [2020-10-28 13:23:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:23:12,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 515 [2020-10-28 13:23:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:12,791 INFO L225 Difference]: With dead ends: 11435 [2020-10-28 13:23:12,791 INFO L226 Difference]: Without dead ends: 5903 [2020-10-28 13:23:12,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-28 13:23:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5881. [2020-10-28 13:23:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-10-28 13:23:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 6329 transitions. [2020-10-28 13:23:12,941 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 6329 transitions. Word has length 515 [2020-10-28 13:23:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:12,943 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 6329 transitions. [2020-10-28 13:23:12,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 6329 transitions. [2020-10-28 13:23:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-28 13:23:12,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:12,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:12,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:23:12,958 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash 605596635, now seen corresponding path program 1 times [2020-10-28 13:23:12,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:12,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784199183] [2020-10-28 13:23:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:15,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-28 13:23:15,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:23:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2846 [2020-10-28 13:23:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:15,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:23:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:23:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:16,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:23:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:16,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:16,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:23:16,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:16,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:23:16,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:23:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:16,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:23:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:16,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:16,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:23:16,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:16,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:23:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 196 proven. 128 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-28 13:23:17,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784199183] [2020-10-28 13:23:17,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:17,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:17,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726524216] [2020-10-28 13:23:17,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:17,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:17,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:17,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:17,112 INFO L87 Difference]: Start difference. First operand 5881 states and 6329 transitions. Second operand 7 states. [2020-10-28 13:23:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:21,223 INFO L93 Difference]: Finished difference Result 12453 states and 13427 transitions. [2020-10-28 13:23:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:21,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-28 13:23:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:21,245 INFO L225 Difference]: With dead ends: 12453 [2020-10-28 13:23:21,245 INFO L226 Difference]: Without dead ends: 6917 [2020-10-28 13:23:21,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:23:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6917 states. [2020-10-28 13:23:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6917 to 6564. [2020-10-28 13:23:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6564 states. [2020-10-28 13:23:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6564 states to 6564 states and 7043 transitions. [2020-10-28 13:23:21,398 INFO L78 Accepts]: Start accepts. Automaton has 6564 states and 7043 transitions. Word has length 549 [2020-10-28 13:23:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:21,399 INFO L481 AbstractCegarLoop]: Abstraction has 6564 states and 7043 transitions. [2020-10-28 13:23:21,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6564 states and 7043 transitions. [2020-10-28 13:23:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-28 13:23:21,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:21,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:21,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:23:21,419 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:21,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1005814871, now seen corresponding path program 1 times [2020-10-28 13:23:21,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:21,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872743336] [2020-10-28 13:23:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:21,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:23,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:23,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-28 13:23:23,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:23:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2289 [2020-10-28 13:23:23,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:23,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:23:23,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:23:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:24,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:24,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:24,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:24,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:24,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:24,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:23:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:24,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:24,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:24,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:23:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:23:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:24,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:24,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:24,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:23:24,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:24,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:23:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 13:23:25,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872743336] [2020-10-28 13:23:25,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:25,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:25,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544287674] [2020-10-28 13:23:25,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:25,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:25,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:25,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:25,059 INFO L87 Difference]: Start difference. First operand 6564 states and 7043 transitions. Second operand 7 states. [2020-10-28 13:23:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:29,303 INFO L93 Difference]: Finished difference Result 13150 states and 14158 transitions. [2020-10-28 13:23:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:23:29,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 610 [2020-10-28 13:23:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:29,332 INFO L225 Difference]: With dead ends: 13150 [2020-10-28 13:23:29,332 INFO L226 Difference]: Without dead ends: 6931 [2020-10-28 13:23:29,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2020-10-28 13:23:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6909. [2020-10-28 13:23:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6909 states. [2020-10-28 13:23:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 7399 transitions. [2020-10-28 13:23:29,475 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 7399 transitions. Word has length 610 [2020-10-28 13:23:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:29,476 INFO L481 AbstractCegarLoop]: Abstraction has 6909 states and 7399 transitions. [2020-10-28 13:23:29,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 7399 transitions. [2020-10-28 13:23:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-28 13:23:29,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:29,485 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:29,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:23:29,485 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:29,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:29,486 INFO L82 PathProgramCache]: Analyzing trace with hash -740355355, now seen corresponding path program 1 times [2020-10-28 13:23:29,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:29,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863192983] [2020-10-28 13:23:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:29,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:31,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-28 13:23:31,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:23:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2314 [2020-10-28 13:23:31,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:31,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-28 13:23:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:23:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:32,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:32,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:32,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:32,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:32,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:32,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:32,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:32,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:23:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:23:32,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:32,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:23:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:23:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:32,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:32,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:23:32,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:32,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:23:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-28 13:23:32,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863192983] [2020-10-28 13:23:32,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:32,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:32,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147141550] [2020-10-28 13:23:32,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:32,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:32,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:32,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:32,973 INFO L87 Difference]: Start difference. First operand 6909 states and 7399 transitions. Second operand 7 states. [2020-10-28 13:23:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:37,024 INFO L93 Difference]: Finished difference Result 18230 states and 19778 transitions. [2020-10-28 13:23:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:23:37,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 612 [2020-10-28 13:23:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:37,059 INFO L225 Difference]: With dead ends: 18230 [2020-10-28 13:23:37,059 INFO L226 Difference]: Without dead ends: 11666 [2020-10-28 13:23:37,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:23:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2020-10-28 13:23:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 9297. [2020-10-28 13:23:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9297 states. [2020-10-28 13:23:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9297 states to 9297 states and 10160 transitions. [2020-10-28 13:23:37,287 INFO L78 Accepts]: Start accepts. Automaton has 9297 states and 10160 transitions. Word has length 612 [2020-10-28 13:23:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:37,288 INFO L481 AbstractCegarLoop]: Abstraction has 9297 states and 10160 transitions. [2020-10-28 13:23:37,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 9297 states and 10160 transitions. [2020-10-28 13:23:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2020-10-28 13:23:37,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:37,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:37,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:23:37,298 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:37,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:37,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1990729798, now seen corresponding path program 1 times [2020-10-28 13:23:37,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:37,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468565641] [2020-10-28 13:23:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 675 [2020-10-28 13:23:38,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-28 13:23:38,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-28 13:23:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 13:23:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:38,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:38,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:38,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:23:38,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:23:38,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:38,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:38,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:23:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:23:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:38,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:23:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:38,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:23:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2020-10-28 13:23:39,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468565641] [2020-10-28 13:23:39,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:39,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:23:39,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039566634] [2020-10-28 13:23:39,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:23:39,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:39,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:23:39,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:23:39,302 INFO L87 Difference]: Start difference. First operand 9297 states and 10160 transitions. Second operand 5 states. [2020-10-28 13:23:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:42,606 INFO L93 Difference]: Finished difference Result 20275 states and 22188 transitions. [2020-10-28 13:23:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:23:42,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 657 [2020-10-28 13:23:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:42,641 INFO L225 Difference]: With dead ends: 20275 [2020-10-28 13:23:42,641 INFO L226 Difference]: Without dead ends: 11323 [2020-10-28 13:23:42,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:23:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11323 states. [2020-10-28 13:23:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11323 to 11321. [2020-10-28 13:23:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11321 states. [2020-10-28 13:23:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11321 states to 11321 states and 12287 transitions. [2020-10-28 13:23:42,869 INFO L78 Accepts]: Start accepts. Automaton has 11321 states and 12287 transitions. Word has length 657 [2020-10-28 13:23:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:42,870 INFO L481 AbstractCegarLoop]: Abstraction has 11321 states and 12287 transitions. [2020-10-28 13:23:42,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:23:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11321 states and 12287 transitions. [2020-10-28 13:23:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2020-10-28 13:23:42,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:42,902 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:42,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:23:42,903 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:42,904 INFO L82 PathProgramCache]: Analyzing trace with hash -782494759, now seen corresponding path program 1 times [2020-10-28 13:23:42,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:42,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564899783] [2020-10-28 13:23:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:43,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1275 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 13:23:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:48,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:23:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:23:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:48,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:23:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:23:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:23:48,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:23:48,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:23:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:48,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:23:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:23:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-28 13:23:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:49,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:49,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:23:49,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:23:49,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:49,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-28 13:23:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1019 [2020-10-28 13:23:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:49,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:49,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:23:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:49,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:49,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1129 [2020-10-28 13:23:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:49,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:23:49,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3910 backedges. 918 proven. 213 refuted. 0 times theorem prover too weak. 2779 trivial. 0 not checked. [2020-10-28 13:23:50,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564899783] [2020-10-28 13:23:50,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:50,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:50,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364737109] [2020-10-28 13:23:50,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:50,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:50,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:50,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:50,327 INFO L87 Difference]: Start difference. First operand 11321 states and 12287 transitions. Second operand 7 states. [2020-10-28 13:23:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:55,413 INFO L93 Difference]: Finished difference Result 26385 states and 28671 transitions. [2020-10-28 13:23:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:23:55,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1247 [2020-10-28 13:23:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:55,458 INFO L225 Difference]: With dead ends: 26385 [2020-10-28 13:23:55,458 INFO L226 Difference]: Without dead ends: 15409 [2020-10-28 13:23:55,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15409 states. [2020-10-28 13:23:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15409 to 15061. [2020-10-28 13:23:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15061 states. [2020-10-28 13:23:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15061 states to 15061 states and 16226 transitions. [2020-10-28 13:23:55,728 INFO L78 Accepts]: Start accepts. Automaton has 15061 states and 16226 transitions. Word has length 1247 [2020-10-28 13:23:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:55,730 INFO L481 AbstractCegarLoop]: Abstraction has 15061 states and 16226 transitions. [2020-10-28 13:23:55,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 15061 states and 16226 transitions. [2020-10-28 13:23:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2020-10-28 13:23:55,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:55,766 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:23:55,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:23:55,766 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1610175779, now seen corresponding path program 1 times [2020-10-28 13:23:55,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:55,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943259807] [2020-10-28 13:23:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1337 [2020-10-28 13:24:01,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-28 13:24:01,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-28 13:24:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:24:01,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:01,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:01,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:01,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:01,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:01,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:24:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:24:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:24:01,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:24:01,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:24:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:24:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-28 13:24:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:24:02,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 13:24:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-28 13:24:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:02,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1191 [2020-10-28 13:24:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 977 proven. 213 refuted. 0 times theorem prover too weak. 2779 trivial. 0 not checked. [2020-10-28 13:24:03,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943259807] [2020-10-28 13:24:03,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:03,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:03,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648724363] [2020-10-28 13:24:03,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:03,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:03,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:03,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:03,908 INFO L87 Difference]: Start difference. First operand 15061 states and 16226 transitions. Second operand 7 states. [2020-10-28 13:24:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:08,751 INFO L93 Difference]: Finished difference Result 30123 states and 32468 transitions. [2020-10-28 13:24:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:08,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1309 [2020-10-28 13:24:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:08,795 INFO L225 Difference]: With dead ends: 30123 [2020-10-28 13:24:08,795 INFO L226 Difference]: Without dead ends: 15407 [2020-10-28 13:24:08,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15407 states. [2020-10-28 13:24:09,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15407 to 15400. [2020-10-28 13:24:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15400 states. [2020-10-28 13:24:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15400 states to 15400 states and 16563 transitions. [2020-10-28 13:24:09,193 INFO L78 Accepts]: Start accepts. Automaton has 15400 states and 16563 transitions. Word has length 1309 [2020-10-28 13:24:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:09,195 INFO L481 AbstractCegarLoop]: Abstraction has 15400 states and 16563 transitions. [2020-10-28 13:24:09,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 15400 states and 16563 transitions. [2020-10-28 13:24:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2020-10-28 13:24:09,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:09,234 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:09,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:24:09,234 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:09,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1950608314, now seen corresponding path program 1 times [2020-10-28 13:24:09,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:09,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620270051] [2020-10-28 13:24:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1334 [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5172 [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-28 13:24:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:24:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:14,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:14,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:14,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:24:14,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:14,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:24:15,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:24:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:15,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:15,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:24:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:24:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:24:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:16,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-28 13:24:16,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:24:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-28 13:24:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:24:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-28 13:24:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:24:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:24:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:24:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 966 proven. 179 refuted. 0 times theorem prover too weak. 2239 trivial. 0 not checked. [2020-10-28 13:24:17,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620270051] [2020-10-28 13:24:17,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:17,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:17,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479939614] [2020-10-28 13:24:17,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:17,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:17,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:17,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:17,908 INFO L87 Difference]: Start difference. First operand 15400 states and 16563 transitions. Second operand 7 states. [2020-10-28 13:24:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:22,399 INFO L93 Difference]: Finished difference Result 30463 states and 32789 transitions. [2020-10-28 13:24:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:24:22,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1308 [2020-10-28 13:24:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:22,432 INFO L225 Difference]: With dead ends: 30463 [2020-10-28 13:24:22,433 INFO L226 Difference]: Without dead ends: 15408 [2020-10-28 13:24:22,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:24:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15408 states. [2020-10-28 13:24:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15408 to 15400. [2020-10-28 13:24:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15400 states. [2020-10-28 13:24:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15400 states to 15400 states and 16549 transitions. [2020-10-28 13:24:22,694 INFO L78 Accepts]: Start accepts. Automaton has 15400 states and 16549 transitions. Word has length 1308 [2020-10-28 13:24:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:22,696 INFO L481 AbstractCegarLoop]: Abstraction has 15400 states and 16549 transitions. [2020-10-28 13:24:22,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15400 states and 16549 transitions. [2020-10-28 13:24:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2020-10-28 13:24:22,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:22,731 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:22,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:24:22,731 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash 422215105, now seen corresponding path program 1 times [2020-10-28 13:24:22,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:22,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151037599] [2020-10-28 13:24:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1368 [2020-10-28 13:24:28,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:24:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-28 13:24:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1238 [2020-10-28 13:24:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:24:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:28,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:24:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:24:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:24:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:24:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:24:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:24:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:24:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:24:28,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:24:28,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:28,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:24:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:28,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:28,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:28,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:24:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:28,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:24:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-28 13:24:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:24:29,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 13:24:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4228 backedges. 935 proven. 2 refuted. 0 times theorem prover too weak. 3291 trivial. 0 not checked. [2020-10-28 13:24:30,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151037599] [2020-10-28 13:24:30,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:30,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:24:30,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125848735] [2020-10-28 13:24:30,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:24:30,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:30,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:24:30,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:24:30,368 INFO L87 Difference]: Start difference. First operand 15400 states and 16549 transitions. Second operand 8 states. [2020-10-28 13:24:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:36,822 INFO L93 Difference]: Finished difference Result 32514 states and 35114 transitions. [2020-10-28 13:24:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:24:36,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1340 [2020-10-28 13:24:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:36,862 INFO L225 Difference]: With dead ends: 32514 [2020-10-28 13:24:36,862 INFO L226 Difference]: Without dead ends: 16773 [2020-10-28 13:24:36,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:24:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16773 states. [2020-10-28 13:24:37,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16773 to 16069. [2020-10-28 13:24:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16069 states. [2020-10-28 13:24:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16069 states to 16069 states and 16959 transitions. [2020-10-28 13:24:37,148 INFO L78 Accepts]: Start accepts. Automaton has 16069 states and 16959 transitions. Word has length 1340 [2020-10-28 13:24:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:37,149 INFO L481 AbstractCegarLoop]: Abstraction has 16069 states and 16959 transitions. [2020-10-28 13:24:37,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:24:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16069 states and 16959 transitions. [2020-10-28 13:24:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2020-10-28 13:24:37,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:37,190 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:37,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:24:37,191 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1587320317, now seen corresponding path program 1 times [2020-10-28 13:24:37,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:37,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165600070] [2020-10-28 13:24:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1479 [2020-10-28 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-28 13:24:42,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1238 [2020-10-28 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-28 13:24:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:42,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:42,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:24:42,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:24:43,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:24:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:24:43,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:24:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:43,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:24:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:24:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:24:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:24:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:24:43,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-28 13:24:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-28 13:24:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4588 backedges. 1295 proven. 2 refuted. 0 times theorem prover too weak. 3291 trivial. 0 not checked. [2020-10-28 13:24:45,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165600070] [2020-10-28 13:24:45,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:45,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:45,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732890042] [2020-10-28 13:24:45,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:45,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:45,937 INFO L87 Difference]: Start difference. First operand 16069 states and 16959 transitions. Second operand 7 states. [2020-10-28 13:24:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:50,431 INFO L93 Difference]: Finished difference Result 31120 states and 32856 transitions. [2020-10-28 13:24:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:24:50,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1451 [2020-10-28 13:24:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:50,460 INFO L225 Difference]: With dead ends: 31120 [2020-10-28 13:24:50,461 INFO L226 Difference]: Without dead ends: 15396 [2020-10-28 13:24:50,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:24:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2020-10-28 13:24:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15388. [2020-10-28 13:24:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15388 states. [2020-10-28 13:24:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15388 states to 15388 states and 16215 transitions. [2020-10-28 13:24:50,737 INFO L78 Accepts]: Start accepts. Automaton has 15388 states and 16215 transitions. Word has length 1451 [2020-10-28 13:24:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:50,739 INFO L481 AbstractCegarLoop]: Abstraction has 15388 states and 16215 transitions. [2020-10-28 13:24:50,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15388 states and 16215 transitions. [2020-10-28 13:24:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1463 [2020-10-28 13:24:50,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:50,784 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:50,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:24:50,784 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:50,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2089609233, now seen corresponding path program 1 times [2020-10-28 13:24:50,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:50,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940335885] [2020-10-28 13:24:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1490 [2020-10-28 13:24:56,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:24:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-28 13:24:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1007 [2020-10-28 13:24:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:24:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:56,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:56,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:56,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:24:56,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:24:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:56,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:24:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:57,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-28 13:24:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:24:57,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 853 [2020-10-28 13:24:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:24:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-28 13:24:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:57,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 13:24:57,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:24:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-28 13:24:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:58,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:24:58,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:24:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1380 [2020-10-28 13:24:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:24:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 1141 proven. 179 refuted. 0 times theorem prover too weak. 3079 trivial. 0 not checked. [2020-10-28 13:24:59,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940335885] [2020-10-28 13:24:59,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:59,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:59,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433714706] [2020-10-28 13:24:59,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:59,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:59,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:59,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:59,332 INFO L87 Difference]: Start difference. First operand 15388 states and 16215 transitions. Second operand 7 states. [2020-10-28 13:25:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:05,763 INFO L93 Difference]: Finished difference Result 31452 states and 33157 transitions. [2020-10-28 13:25:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:25:05,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1462 [2020-10-28 13:25:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:05,799 INFO L225 Difference]: With dead ends: 31452 [2020-10-28 13:25:05,799 INFO L226 Difference]: Without dead ends: 16067 [2020-10-28 13:25:05,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:25:05,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16067 states. [2020-10-28 13:25:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 15048. [2020-10-28 13:25:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15048 states. [2020-10-28 13:25:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15048 states to 15048 states and 15846 transitions. [2020-10-28 13:25:06,079 INFO L78 Accepts]: Start accepts. Automaton has 15048 states and 15846 transitions. Word has length 1462 [2020-10-28 13:25:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:06,081 INFO L481 AbstractCegarLoop]: Abstraction has 15048 states and 15846 transitions. [2020-10-28 13:25:06,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 15048 states and 15846 transitions. [2020-10-28 13:25:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1518 [2020-10-28 13:25:06,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:06,118 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:06,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:25:06,119 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:06,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1270199041, now seen corresponding path program 1 times [2020-10-28 13:25:06,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:06,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216651328] [2020-10-28 13:25:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1545 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1238 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:25:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:11,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:25:11,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:25:11,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:25:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:25:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:25:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:12,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:25:12,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:25:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:25:12,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:25:12,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:25:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:25:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:25:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:25:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:25:12,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:25:12,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:12,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:25:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:25:12,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-28 13:25:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:12,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 13:25:12,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:25:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-28 13:25:12,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:12,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-28 13:25:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4617 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 4455 trivial. 0 not checked. [2020-10-28 13:25:13,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216651328] [2020-10-28 13:25:13,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:13,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:25:13,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625467608] [2020-10-28 13:25:13,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:25:13,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:13,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:25:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:25:13,940 INFO L87 Difference]: Start difference. First operand 15048 states and 15846 transitions. Second operand 5 states.