/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:21:52,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:21:52,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:21:52,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:21:52,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:21:52,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:21:52,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:21:52,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:21:52,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:21:52,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:21:52,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:21:52,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:21:52,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:21:52,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:21:52,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:21:52,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:21:52,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:21:52,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:21:52,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:21:52,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:21:52,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:21:52,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:21:52,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:21:52,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:21:53,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:21:53,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:21:53,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:21:53,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:21:53,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:21:53,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:21:53,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:21:53,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:21:53,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:21:53,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:21:53,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:21:53,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:21:53,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:21:53,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:21:53,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:21:53,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:21:53,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:21:53,033 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 13:21:53,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:21:53,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:21:53,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:21:53,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:21:53,110 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:21:53,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:21:53,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:21:53,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:21:53,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:21:53,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:21:53,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:21:53,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:21:53,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:21:53,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:21:53,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:21:53,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:21:53,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:21:53,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:21:53,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:21:53,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:21:53,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:21:53,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:21:53,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:21:53,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:21:53,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:21:53,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:21:53,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:21:53,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:21:53,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:21:53,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:21:53,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:21:53,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:21:53,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:21:53,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:21:53,648 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:21:53,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28.c [2020-10-28 13:21:53,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb27fc0c1/98b935d12a0e49c6afbd9fe697827389/FLAG8132ae160 [2020-10-28 13:21:54,562 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:21:54,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label28.c [2020-10-28 13:21:54,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb27fc0c1/98b935d12a0e49c6afbd9fe697827389/FLAG8132ae160 [2020-10-28 13:21:54,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb27fc0c1/98b935d12a0e49c6afbd9fe697827389 [2020-10-28 13:21:54,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:21:54,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:21:54,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:54,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:21:54,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:21:54,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:54" (1/1) ... [2020-10-28 13:21:54,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ac0f5c 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 13:21:54,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:21:54" (1/1) ... [2020-10-28 13:21:54,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:21:54,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:21:55,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:55,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:21:55,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:21:55,805 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:21:55,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:21:55 WrapperNode [2020-10-28 13:21:55,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:21:55,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:21:55,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:21:55,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:21:55,822 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 13:21:55,823 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 13:21:55,859 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 13:21:55,859 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 13:21:55,936 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 13:21:55,973 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 13:21:55,994 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 13:21:56,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:21:56,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:21:56,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:21:56,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:21:56,019 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 13:21:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:21:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:21:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:21:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:21:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:21:56,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:21:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:21:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:21:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:21:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:21:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:21:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:21:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:21:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:21:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:21:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:21:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:21:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:21:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:21:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:21:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:21:59,423 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:21:59,424 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:21:59,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:59 BoogieIcfgContainer [2020-10-28 13:21:59,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:21:59,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:21:59,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:21:59,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:21:59,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:21:54" (1/3) ... [2020-10-28 13:21:59,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4896d85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:59, skipping insertion in model container [2020-10-28 13:21:59,438 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 13:21:59,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4896d85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:21:59, skipping insertion in model container [2020-10-28 13:21:59,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:21:59" (3/3) ... [2020-10-28 13:21:59,441 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label28.c [2020-10-28 13:21:59,456 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:21:59,462 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:21:59,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:21:59,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:21:59,531 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:21:59,531 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:21:59,531 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:21:59,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:21:59,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:21:59,532 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:21:59,532 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:21:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:21:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 13:21:59,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:59,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:59,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:59,614 INFO L82 PathProgramCache]: Analyzing trace with hash 780759676, now seen corresponding path program 1 times [2020-10-28 13:21:59,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:59,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101132127] [2020-10-28 13:21:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:00,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:22:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-28 13:22:00,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:00,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:22:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:22:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:00,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:22:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:00,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:00,888 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 13:22:00,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101132127] [2020-10-28 13:22:00,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:22:00,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:22:00,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334170733] [2020-10-28 13:22:00,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:22:00,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:00,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:22:00,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:22:00,915 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:22:01,860 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:22:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:11,114 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-28 13:22:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:22:11,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-28 13:22:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:11,156 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:22:11,156 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:22:11,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:22:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-28 13:22:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-28 13:22:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1643 transitions. [2020-10-28 13:22:11,307 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1643 transitions. Word has length 73 [2020-10-28 13:22:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:11,308 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1643 transitions. [2020-10-28 13:22:11,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:22:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1643 transitions. [2020-10-28 13:22:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 13:22:11,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:11,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:11,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:22:11,327 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:11,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1746677476, now seen corresponding path program 1 times [2020-10-28 13:22:11,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:11,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549130447] [2020-10-28 13:22:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 13:22:16,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:22:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:22:16,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 13:22:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:22:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:22:16,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:16,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:22:16,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:16,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:22:16,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:22:16,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:22:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 13:22:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:22:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:22:16,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:16,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 13:22:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:17,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549130447] [2020-10-28 13:22:17,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:17,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:17,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774587137] [2020-10-28 13:22:17,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:17,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:17,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:17,234 INFO L87 Difference]: Start difference. First operand 1032 states and 1643 transitions. Second operand 7 states. [2020-10-28 13:22:17,933 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:26,087 INFO L93 Difference]: Finished difference Result 2440 states and 3916 transitions. [2020-10-28 13:22:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:26,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-28 13:22:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:26,100 INFO L225 Difference]: With dead ends: 2440 [2020-10-28 13:22:26,100 INFO L226 Difference]: Without dead ends: 1414 [2020-10-28 13:22:26,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-10-28 13:22:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1393. [2020-10-28 13:22:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-10-28 13:22:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2088 transitions. [2020-10-28 13:22:26,201 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2088 transitions. Word has length 255 [2020-10-28 13:22:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:26,206 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 2088 transitions. [2020-10-28 13:22:26,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2088 transitions. [2020-10-28 13:22:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 13:22:26,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:26,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:26,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:22:26,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2023458586, now seen corresponding path program 1 times [2020-10-28 13:22:26,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:26,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043784727] [2020-10-28 13:22:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:26,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:28,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:31,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 13:22:31,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:22:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:22:31,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:31,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 13:22:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 13:22:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:31,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:31,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:31,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:22:31,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:31,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:31,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:31,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:22:31,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:31,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:22:31,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:31,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:22:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 13:22:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:31,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:31,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:31,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:22:31,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:31,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:22:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:22:32,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043784727] [2020-10-28 13:22:32,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:32,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:32,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299313817] [2020-10-28 13:22:32,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:32,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:32,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:32,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:32,072 INFO L87 Difference]: Start difference. First operand 1393 states and 2088 transitions. Second operand 8 states. [2020-10-28 13:22:32,257 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:35,255 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:40,430 INFO L93 Difference]: Finished difference Result 3843 states and 5858 transitions. [2020-10-28 13:22:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:22:40,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-10-28 13:22:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:40,445 INFO L225 Difference]: With dead ends: 3843 [2020-10-28 13:22:40,445 INFO L226 Difference]: Without dead ends: 2099 [2020-10-28 13:22:40,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2020-10-28 13:22:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2076. [2020-10-28 13:22:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2076 states. [2020-10-28 13:22:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2401 transitions. [2020-10-28 13:22:40,528 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2401 transitions. Word has length 258 [2020-10-28 13:22:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:40,528 INFO L481 AbstractCegarLoop]: Abstraction has 2076 states and 2401 transitions. [2020-10-28 13:22:40,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2401 transitions. [2020-10-28 13:22:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-28 13:22:40,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:40,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:40,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:22:40,535 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1565572246, now seen corresponding path program 1 times [2020-10-28 13:22:40,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:40,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467314075] [2020-10-28 13:22:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:45,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-28 13:22:45,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:22:45,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:45,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-28 13:22:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:22:45,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:22:45,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:45,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:45,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:22:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:22:45,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:45,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:22:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 13:22:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:46,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:46,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:46,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:46,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:22:46,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:22:46,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:46,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:22:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:22:46,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467314075] [2020-10-28 13:22:46,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:46,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:22:46,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265831087] [2020-10-28 13:22:46,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:22:46,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:22:46,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:22:46,336 INFO L87 Difference]: Start difference. First operand 2076 states and 2401 transitions. Second operand 5 states. [2020-10-28 13:22:47,206 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:50,734 INFO L93 Difference]: Finished difference Result 4157 states and 4814 transitions. [2020-10-28 13:22:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:22:50,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-28 13:22:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:50,752 INFO L225 Difference]: With dead ends: 4157 [2020-10-28 13:22:50,752 INFO L226 Difference]: Without dead ends: 2087 [2020-10-28 13:22:50,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:22:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-28 13:22:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2076. [2020-10-28 13:22:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2076 states. [2020-10-28 13:22:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2326 transitions. [2020-10-28 13:22:50,827 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2326 transitions. Word has length 298 [2020-10-28 13:22:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:50,828 INFO L481 AbstractCegarLoop]: Abstraction has 2076 states and 2326 transitions. [2020-10-28 13:22:50,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:22:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2326 transitions. [2020-10-28 13:22:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-28 13:22:50,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:50,837 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:50,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:22:50,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:50,839 INFO L82 PathProgramCache]: Analyzing trace with hash 910037319, now seen corresponding path program 1 times [2020-10-28 13:22:50,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:50,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841775159] [2020-10-28 13:22:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:50,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:55,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:55,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-28 13:22:55,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 13:22:55,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:55,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:22:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:22:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:22:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:56,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:22:56,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:22:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:22:56,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:22:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:22:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 13:22:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:22:56,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:22:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:22:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:56,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-28 13:22:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:56,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:56,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:22:56,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:22:56,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:56,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:22:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 195 proven. 207 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-28 13:22:56,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841775159] [2020-10-28 13:22:56,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:56,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:56,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559509082] [2020-10-28 13:22:56,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:56,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:56,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:56,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:56,986 INFO L87 Difference]: Start difference. First operand 2076 states and 2326 transitions. Second operand 8 states. [2020-10-28 13:22:57,161 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:22:59,833 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:02,072 INFO L93 Difference]: Finished difference Result 4516 states and 5076 transitions. [2020-10-28 13:23:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:23:02,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 405 [2020-10-28 13:23:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:02,090 INFO L225 Difference]: With dead ends: 4516 [2020-10-28 13:23:02,091 INFO L226 Difference]: Without dead ends: 2446 [2020-10-28 13:23:02,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:23:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2020-10-28 13:23:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2086. [2020-10-28 13:23:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2020-10-28 13:23:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2298 transitions. [2020-10-28 13:23:02,167 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2298 transitions. Word has length 405 [2020-10-28 13:23:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:02,167 INFO L481 AbstractCegarLoop]: Abstraction has 2086 states and 2298 transitions. [2020-10-28 13:23:02,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:23:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2298 transitions. [2020-10-28 13:23:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-28 13:23:02,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:02,181 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-28 13:23:02,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:23:02,182 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:02,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1986812012, now seen corresponding path program 1 times [2020-10-28 13:23:02,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:02,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385465953] [2020-10-28 13:23:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:07,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-28 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 13:23:07,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:07,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:23:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:23:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:23:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:23:07,571 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:07,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:23:07,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:07,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:07,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:23:07,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:07,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:07,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:23:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:07,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:23:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:23:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 13:23:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:08,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:08,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:08,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:23:08,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:08,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:08,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:08,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-28 13:23:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:08,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:08,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:08,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:23:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:08,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-28 13:23:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:08,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:23:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:23:08,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:08,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:23:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 260 proven. 317 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-10-28 13:23:08,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385465953] [2020-10-28 13:23:08,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:08,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:08,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674876565] [2020-10-28 13:23:08,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:08,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:08,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:08,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:08,759 INFO L87 Difference]: Start difference. First operand 2086 states and 2298 transitions. Second operand 7 states. [2020-10-28 13:23:08,929 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:23:12,579 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:23:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:14,239 INFO L93 Difference]: Finished difference Result 4627 states and 5302 transitions. [2020-10-28 13:23:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:23:14,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-28 13:23:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:14,261 INFO L225 Difference]: With dead ends: 4627 [2020-10-28 13:23:14,262 INFO L226 Difference]: Without dead ends: 2547 [2020-10-28 13:23:14,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:23:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2020-10-28 13:23:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2434. [2020-10-28 13:23:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2434 states. [2020-10-28 13:23:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 2651 transitions. [2020-10-28 13:23:14,359 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 2651 transitions. Word has length 534 [2020-10-28 13:23:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:14,360 INFO L481 AbstractCegarLoop]: Abstraction has 2434 states and 2651 transitions. [2020-10-28 13:23:14,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 2651 transitions. [2020-10-28 13:23:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-28 13:23:14,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:14,390 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-28 13:23:14,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:23:14,390 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:14,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2133717877, now seen corresponding path program 1 times [2020-10-28 13:23:14,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:14,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106084444] [2020-10-28 13:23:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 793 [2020-10-28 13:23:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:23:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:19,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:23:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:23:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:19,727 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:19,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:23:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:19,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:23:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:23:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:20,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:23:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:23:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:20,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:20,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:20,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:23:20,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:20,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:23:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-28 13:23:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:20,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:20,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:23:20,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:20,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:20,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-28 13:23:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:20,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:20,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:23:20,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:20,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:23:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:20,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:23:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:23:20,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:20,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:23:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 463 proven. 325 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-28 13:23:21,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106084444] [2020-10-28 13:23:21,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:21,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:21,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748593783] [2020-10-28 13:23:21,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:21,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:21,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:21,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:21,142 INFO L87 Difference]: Start difference. First operand 2434 states and 2651 transitions. Second operand 7 states. [2020-10-28 13:23:22,971 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:26,010 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:28,331 INFO L93 Difference]: Finished difference Result 6356 states and 7369 transitions. [2020-10-28 13:23:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:23:28,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 773 [2020-10-28 13:23:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:28,357 INFO L225 Difference]: With dead ends: 6356 [2020-10-28 13:23:28,357 INFO L226 Difference]: Without dead ends: 4265 [2020-10-28 13:23:28,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:23:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2020-10-28 13:23:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 4165. [2020-10-28 13:23:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2020-10-28 13:23:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 4491 transitions. [2020-10-28 13:23:28,499 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 4491 transitions. Word has length 773 [2020-10-28 13:23:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:28,500 INFO L481 AbstractCegarLoop]: Abstraction has 4165 states and 4491 transitions. [2020-10-28 13:23:28,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 4491 transitions. [2020-10-28 13:23:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2020-10-28 13:23:28,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:28,514 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-28 13:23:28,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:23:28,515 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:28,516 INFO L82 PathProgramCache]: Analyzing trace with hash -883884421, now seen corresponding path program 1 times [2020-10-28 13:23:28,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:28,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019582658] [2020-10-28 13:23:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:29,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:33,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:33,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 801 [2020-10-28 13:23:33,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 13:23:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:33,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:23:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:23:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:33,969 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:33,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:34,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:34,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:34,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 13:23:34,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:34,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:23:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:34,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:34,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:23:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:23:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:34,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:23:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:34,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 13:23:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:34,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-28 13:23:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:34,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-28 13:23:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:34,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:23:34,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:23:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:34,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:23:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 463 proven. 325 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-28 13:23:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019582658] [2020-10-28 13:23:35,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:35,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:35,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596619589] [2020-10-28 13:23:35,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:35,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:35,243 INFO L87 Difference]: Start difference. First operand 4165 states and 4491 transitions. Second operand 7 states. [2020-10-28 13:23:37,241 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:23:37,565 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:23:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:43,569 INFO L93 Difference]: Finished difference Result 8703 states and 9413 transitions. [2020-10-28 13:23:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:23:43,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 781 [2020-10-28 13:23:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:43,592 INFO L225 Difference]: With dead ends: 8703 [2020-10-28 13:23:43,592 INFO L226 Difference]: Without dead ends: 4881 [2020-10-28 13:23:43,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2020-10-28 13:23:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 4845. [2020-10-28 13:23:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2020-10-28 13:23:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 5199 transitions. [2020-10-28 13:23:43,737 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 5199 transitions. Word has length 781 [2020-10-28 13:23:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:43,738 INFO L481 AbstractCegarLoop]: Abstraction has 4845 states and 5199 transitions. [2020-10-28 13:23:43,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 5199 transitions. [2020-10-28 13:23:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-28 13:23:43,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:43,756 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:43,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:23:43,756 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:43,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash 74763887, now seen corresponding path program 1 times [2020-10-28 13:23:43,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:43,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368476622] [2020-10-28 13:23:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 891 [2020-10-28 13:23:48,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:23:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:23:48,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:48,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:23:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-28 13:23:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:49,179 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:23:49,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:23:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:49,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:49,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:23:49,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:49,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:23:49,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:49,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:49,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:23:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:49,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:49,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:23:49,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 13:23:49,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:49,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:23:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:23:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:23:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:23:49,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:23:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:49,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 13:23:49,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:49,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:23:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:23:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:23:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-28 13:23:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-10-28 13:23:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:23:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-28 13:23:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:23:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:23:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:23:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:23:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:23:50,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:23:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:23:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:23:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:23:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:23:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 553 proven. 325 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-28 13:23:50,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368476622] [2020-10-28 13:23:50,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:23:50,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:23:50,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294672596] [2020-10-28 13:23:50,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:23:50,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:23:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:23:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:23:50,685 INFO L87 Difference]: Start difference. First operand 4845 states and 5199 transitions. Second operand 7 states. [2020-10-28 13:23:50,850 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:55,544 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:23:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:23:56,392 INFO L93 Difference]: Finished difference Result 10740 states and 11704 transitions. [2020-10-28 13:23:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:23:56,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 871 [2020-10-28 13:23:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:23:56,421 INFO L225 Difference]: With dead ends: 10740 [2020-10-28 13:23:56,422 INFO L226 Difference]: Without dead ends: 6575 [2020-10-28 13:23:56,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:23:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2020-10-28 13:23:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 5879. [2020-10-28 13:23:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-10-28 13:23:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 6272 transitions. [2020-10-28 13:23:56,574 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 6272 transitions. Word has length 871 [2020-10-28 13:23:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:23:56,575 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 6272 transitions. [2020-10-28 13:23:56,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:23:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 6272 transitions. [2020-10-28 13:23:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-28 13:23:56,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:23:56,593 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-28 13:23:56,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:23:56,593 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:23:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:23:56,594 INFO L82 PathProgramCache]: Analyzing trace with hash -672894710, now seen corresponding path program 1 times [2020-10-28 13:23:56,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:23:56,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305639480] [2020-10-28 13:23:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:23:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:23:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:23:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:01,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:01,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-28 13:24:01,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:24:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 13:24:01,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:01,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:24:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:24:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:01,984 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:24:02,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:02,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:24:02,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:24:02,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:24:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:24:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:02,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:24:02,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:24:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-28 13:24:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:24:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-28 13:24:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:02,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:02,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:02,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:24:02,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:24:02,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:02,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:24:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 642 proven. 325 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2020-10-28 13:24:03,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305639480] [2020-10-28 13:24:03,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:03,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:03,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198584306] [2020-10-28 13:24:03,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:03,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:03,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:03,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:03,153 INFO L87 Difference]: Start difference. First operand 5879 states and 6272 transitions. Second operand 7 states. [2020-10-28 13:24:05,748 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:24:08,346 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:24:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:09,725 INFO L93 Difference]: Finished difference Result 13132 states and 14170 transitions. [2020-10-28 13:24:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:09,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 881 [2020-10-28 13:24:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:09,755 INFO L225 Difference]: With dead ends: 13132 [2020-10-28 13:24:09,755 INFO L226 Difference]: Without dead ends: 7596 [2020-10-28 13:24:09,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2020-10-28 13:24:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 7576. [2020-10-28 13:24:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7576 states. [2020-10-28 13:24:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 8026 transitions. [2020-10-28 13:24:09,923 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 8026 transitions. Word has length 881 [2020-10-28 13:24:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:09,924 INFO L481 AbstractCegarLoop]: Abstraction has 7576 states and 8026 transitions. [2020-10-28 13:24:09,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 8026 transitions. [2020-10-28 13:24:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2020-10-28 13:24:09,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:09,950 INFO L422 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:24:09,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:24:09,950 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash 736589881, now seen corresponding path program 1 times [2020-10-28 13:24:09,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:09,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841911523] [2020-10-28 13:24:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1165 [2020-10-28 13:24:15,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:24:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 13:24:15,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:24:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:24:15,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,441 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:15,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:15,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:24:15,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:15,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:24:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:15,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:24:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:15,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:24:15,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:15,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 13:24:15,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:15,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:24:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:24:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:24:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:24:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:24:16,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:24:16,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:24:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-28 13:24:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:24:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-28 13:24:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:16,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2020-10-28 13:24:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:16,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:24:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 719 proven. 559 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-28 13:24:18,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841911523] [2020-10-28 13:24:18,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:18,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:18,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160656519] [2020-10-28 13:24:18,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:18,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:18,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:18,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:18,345 INFO L87 Difference]: Start difference. First operand 7576 states and 8026 transitions. Second operand 7 states. [2020-10-28 13:24:18,518 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:24:22,627 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:24:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:23,477 INFO L93 Difference]: Finished difference Result 14821 states and 15717 transitions. [2020-10-28 13:24:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:24:23,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1141 [2020-10-28 13:24:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:23,500 INFO L225 Difference]: With dead ends: 14821 [2020-10-28 13:24:23,500 INFO L226 Difference]: Without dead ends: 7588 [2020-10-28 13:24:23,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:24:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2020-10-28 13:24:23,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 7576. [2020-10-28 13:24:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7576 states. [2020-10-28 13:24:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 8024 transitions. [2020-10-28 13:24:23,673 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 8024 transitions. Word has length 1141 [2020-10-28 13:24:23,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:23,674 INFO L481 AbstractCegarLoop]: Abstraction has 7576 states and 8024 transitions. [2020-10-28 13:24:23,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 8024 transitions. [2020-10-28 13:24:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2020-10-28 13:24:23,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:23,702 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 7, 7, 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, 3, 3, 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] [2020-10-28 13:24:23,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:24:23,702 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:23,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:23,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1167432748, now seen corresponding path program 1 times [2020-10-28 13:24:23,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:23,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59693840] [2020-10-28 13:24:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1201 [2020-10-28 13:24:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-28 13:24:29,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:24:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:24:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,287 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:29,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:29,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:24:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:24:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 13:24:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:24:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:24:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:29,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:24:29,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:29,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:24:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:24:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:29,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:29,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:24:29,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:24:29,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:30,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:24:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-28 13:24:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:30,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:30,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:30,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:24:30,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:24:30,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:30,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:24:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-28 13:24:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:30,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:24:30,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:30,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:24:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-28 13:24:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:30,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:24:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-28 13:24:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:30,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:30,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:30,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3587 backedges. 703 proven. 685 refuted. 0 times theorem prover too weak. 2199 trivial. 0 not checked. [2020-10-28 13:24:31,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59693840] [2020-10-28 13:24:31,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:31,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:31,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14605284] [2020-10-28 13:24:31,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:31,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:31,391 INFO L87 Difference]: Start difference. First operand 7576 states and 8024 transitions. Second operand 7 states. [2020-10-28 13:24:31,574 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:24:36,044 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:24:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:37,294 INFO L93 Difference]: Finished difference Result 17535 states and 18602 transitions. [2020-10-28 13:24:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:37,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1175 [2020-10-28 13:24:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:37,324 INFO L225 Difference]: With dead ends: 17535 [2020-10-28 13:24:37,325 INFO L226 Difference]: Without dead ends: 10302 [2020-10-28 13:24:37,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:24:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2020-10-28 13:24:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 9612. [2020-10-28 13:24:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9612 states. [2020-10-28 13:24:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9612 states to 9612 states and 10159 transitions. [2020-10-28 13:24:37,536 INFO L78 Accepts]: Start accepts. Automaton has 9612 states and 10159 transitions. Word has length 1175 [2020-10-28 13:24:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:37,536 INFO L481 AbstractCegarLoop]: Abstraction has 9612 states and 10159 transitions. [2020-10-28 13:24:37,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 9612 states and 10159 transitions. [2020-10-28 13:24:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2020-10-28 13:24:37,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:37,569 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 13:24:37,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:24:37,569 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:37,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1188092332, now seen corresponding path program 1 times [2020-10-28 13:24:37,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:37,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013844603] [2020-10-28 13:24:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:42,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:42,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1373 [2020-10-28 13:24:42,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:24:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-28 13:24:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:42,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1078 [2020-10-28 13:24:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-28 13:24:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,228 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:43,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:24:43,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:43,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:24:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:24:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2020-10-28 13:24:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:24:43,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:24:43,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-28 13:24:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:24:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-28 13:24:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-28 13:24:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:24:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:44,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:24:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-28 13:24:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3967 backedges. 1559 proven. 2 refuted. 0 times theorem prover too weak. 2406 trivial. 0 not checked. [2020-10-28 13:24:45,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013844603] [2020-10-28 13:24:45,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:24:45,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:24:45,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094873720] [2020-10-28 13:24:45,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:24:45,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:24:45,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:24:45,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:24:45,532 INFO L87 Difference]: Start difference. First operand 9612 states and 10159 transitions. Second operand 7 states. [2020-10-28 13:24:45,733 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:24:50,387 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 13:24:52,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:24:52,052 INFO L93 Difference]: Finished difference Result 22969 states and 24483 transitions. [2020-10-28 13:24:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:24:52,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1347 [2020-10-28 13:24:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:24:52,096 INFO L225 Difference]: With dead ends: 22969 [2020-10-28 13:24:52,096 INFO L226 Difference]: Without dead ends: 13700 [2020-10-28 13:24:52,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:24:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13700 states. [2020-10-28 13:24:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13700 to 13016. [2020-10-28 13:24:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13016 states. [2020-10-28 13:24:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13016 states to 13016 states and 13779 transitions. [2020-10-28 13:24:52,350 INFO L78 Accepts]: Start accepts. Automaton has 13016 states and 13779 transitions. Word has length 1347 [2020-10-28 13:24:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:24:52,352 INFO L481 AbstractCegarLoop]: Abstraction has 13016 states and 13779 transitions. [2020-10-28 13:24:52,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:24:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 13016 states and 13779 transitions. [2020-10-28 13:24:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1544 [2020-10-28 13:24:52,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:24:52,396 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:52,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:24:52,397 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:24:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:24:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1918813029, now seen corresponding path program 1 times [2020-10-28 13:24:52,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:24:52,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574851545] [2020-10-28 13:24:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:24:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:57,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1569 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1191 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:24:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,030 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:24:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:24:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:24:58,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:24:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:24:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:24:58,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:24:58,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:24:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:24:58,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:24:58,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:24:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:24:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:24:58,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:24:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:24:58,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:24:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:24:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:24:58,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:24:58,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:24:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:24:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:24:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:58,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:58,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:24:58,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:24:58,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:58,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:24:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:24:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:24:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-28 13:24:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:59,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 13:24:59,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-28 13:24:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:59,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:24:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-28 13:24:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:24:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:24:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:24:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:24:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:24:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 13:24:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:24:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:24:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:24:59,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:24:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:24:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:24:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 13:24:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3972 backedges. 1633 proven. 2 refuted. 0 times theorem prover too weak. 2337 trivial. 0 not checked. [2020-10-28 13:25:00,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574851545] [2020-10-28 13:25:00,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:00,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:25:00,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613616683] [2020-10-28 13:25:00,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:25:00,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:00,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:25:00,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:25:00,876 INFO L87 Difference]: Start difference. First operand 13016 states and 13779 transitions. Second operand 8 states. [2020-10-28 13:25:02,867 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:25:06,568 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:25:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:09,962 INFO L93 Difference]: Finished difference Result 27746 states and 29360 transitions. [2020-10-28 13:25:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:25:09,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1543 [2020-10-28 13:25:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:10,006 INFO L225 Difference]: With dead ends: 27746 [2020-10-28 13:25:10,006 INFO L226 Difference]: Without dead ends: 14382 [2020-10-28 13:25:10,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:25:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14382 states. [2020-10-28 13:25:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14382 to 12330. [2020-10-28 13:25:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12330 states. [2020-10-28 13:25:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12330 states to 12330 states and 12859 transitions. [2020-10-28 13:25:10,266 INFO L78 Accepts]: Start accepts. Automaton has 12330 states and 12859 transitions. Word has length 1543 [2020-10-28 13:25:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:10,268 INFO L481 AbstractCegarLoop]: Abstraction has 12330 states and 12859 transitions. [2020-10-28 13:25:10,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:25:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 12330 states and 12859 transitions. [2020-10-28 13:25:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1616 [2020-10-28 13:25:10,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:10,310 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-28 13:25:10,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:25:10,310 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:10,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1483233837, now seen corresponding path program 1 times [2020-10-28 13:25:10,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:10,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747222990] [2020-10-28 13:25:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:15,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1639 [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:25:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:25:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:15,980 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:25:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:15,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:16,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:25:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:16,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:25:16,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:25:16,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:16,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:25:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:16,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:16,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:25:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:16,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:25:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:25:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:16,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:25:16,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 13:25:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:16,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:25:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:25:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:17,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-28 13:25:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1332 [2020-10-28 13:25:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:17,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:17,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-28 13:25:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:25:17,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:17,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-28 13:25:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4488 backedges. 1276 proven. 479 refuted. 0 times theorem prover too weak. 2733 trivial. 0 not checked. [2020-10-28 13:25:19,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747222990] [2020-10-28 13:25:19,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:19,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:25:19,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949992041] [2020-10-28 13:25:19,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:19,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:19,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:19,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:19,367 INFO L87 Difference]: Start difference. First operand 12330 states and 12859 transitions. Second operand 7 states.