/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-cav19/array_doub_access_init_const.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:35:36,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:35:36,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:35:37,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:35:37,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:35:37,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:35:37,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:35:37,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:35:37,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:35:37,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:35:37,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:35:37,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:35:37,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:35:37,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:35:37,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:35:37,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:35:37,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:35:37,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:35:37,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:35:37,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:35:37,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:35:37,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:35:37,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:35:37,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:35:37,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:35:37,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:35:37,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:35:37,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:35:37,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:35:37,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:35:37,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:35:37,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:35:37,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:35:37,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:35:37,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:35:37,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:35:37,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:35:37,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:35:37,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:35:37,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:35:37,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:35:37,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 08:35:37,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:35:37,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:35:37,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:35:37,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:35:37,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:35:37,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:35:37,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:35:37,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:35:37,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:35:37,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:35:37,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:35:37,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:35:37,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:35:37,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:35:37,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:35:37,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:35:37,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:35:37,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:35:37,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:35:37,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:35:37,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:35:37,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:35:37,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:35:37,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:35:37,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:35:37,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:35:37,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:35:37,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:35:37,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:35:37,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:35:37,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:35:37,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:35:37,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:35:37,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:35:37,621 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:35:37,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_doub_access_init_const.c [2020-10-28 08:35:37,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/221be4cac/83019ffcb85f4460bd81257dc17eb854/FLAGe3506c331 [2020-10-28 08:35:38,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:35:38,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_doub_access_init_const.c [2020-10-28 08:35:38,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/221be4cac/83019ffcb85f4460bd81257dc17eb854/FLAGe3506c331 [2020-10-28 08:35:38,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/221be4cac/83019ffcb85f4460bd81257dc17eb854 [2020-10-28 08:35:38,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:35:38,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:35:38,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:35:38,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:35:38,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:35:38,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:38,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be277ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38, skipping insertion in model container [2020-10-28 08:35:38,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:38,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:35:38,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:35:38,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:35:38,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:35:38,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:35:38,989 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:35:38,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38 WrapperNode [2020-10-28 08:35:38,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:35:38,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:35:38,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:35:38,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:35:39,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:35:39,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:35:39,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:35:39,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:35:39,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:35:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:35:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:35:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:35:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:35:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:35:39,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:35:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:35:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:35:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:35:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:35:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:35:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:35:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:35:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:35:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:35:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:35:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:35:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:35:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:35:39,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:35:39,369 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 08:35:39,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:39 BoogieIcfgContainer [2020-10-28 08:35:39,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:35:39,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:35:39,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:35:39,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:35:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:35:38" (1/3) ... [2020-10-28 08:35:39,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7080ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:39, skipping insertion in model container [2020-10-28 08:35:39,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:38" (2/3) ... [2020-10-28 08:35:39,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7080ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:39, skipping insertion in model container [2020-10-28 08:35:39,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:39" (3/3) ... [2020-10-28 08:35:39,382 INFO L111 eAbstractionObserver]: Analyzing ICFG array_doub_access_init_const.c [2020-10-28 08:35:39,396 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:35:39,401 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:35:39,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:35:39,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:35:39,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:35:39,530 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:35:39,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:35:39,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:35:39,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:35:39,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:35:39,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:35:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-28 08:35:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 08:35:39,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:39,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:39,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:39,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1723569169, now seen corresponding path program 1 times [2020-10-28 08:35:39,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:39,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508625665] [2020-10-28 08:35:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:35:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-28 08:35:40,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:40,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:40,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:35:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:35:40,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:40,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:40,246 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 08:35:40,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508625665] [2020-10-28 08:35:40,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:35:40,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:35:40,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150803887] [2020-10-28 08:35:40,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:35:40,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:40,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:35:40,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:35:40,293 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-10-28 08:35:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:40,424 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-28 08:35:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:35:40,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-28 08:35:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:40,434 INFO L225 Difference]: With dead ends: 47 [2020-10-28 08:35:40,434 INFO L226 Difference]: Without dead ends: 22 [2020-10-28 08:35:40,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:35:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-28 08:35:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-28 08:35:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 08:35:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-28 08:35:40,482 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-10-28 08:35:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:40,482 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-28 08:35:40,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:35:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-28 08:35:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 08:35:40,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:40,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:40,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:35:40,484 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:40,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:40,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1613601485, now seen corresponding path program 1 times [2020-10-28 08:35:40,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:40,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705534387] [2020-10-28 08:35:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:35:41,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-28 08:35:41,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:35:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:35:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:35:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:41,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:35:41,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:35:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:41,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705534387] [2020-10-28 08:35:41,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:41,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:35:41,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711682200] [2020-10-28 08:35:41,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:35:41,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:35:41,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:35:41,428 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-10-28 08:35:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:41,535 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-28 08:35:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:35:41,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 08:35:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:41,537 INFO L225 Difference]: With dead ends: 36 [2020-10-28 08:35:41,537 INFO L226 Difference]: Without dead ends: 24 [2020-10-28 08:35:41,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:35:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-28 08:35:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-28 08:35:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 08:35:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-28 08:35:41,547 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-10-28 08:35:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:41,547 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-28 08:35:41,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:35:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-28 08:35:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 08:35:41,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:41,548 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:41,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:35:41,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash -294029867, now seen corresponding path program 2 times [2020-10-28 08:35:41,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:41,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843851574] [2020-10-28 08:35:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:35:42,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:42,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-28 08:35:42,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:35:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:42,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:35:42,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:42,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843851574] [2020-10-28 08:35:42,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:42,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:35:42,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752948863] [2020-10-28 08:35:42,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:35:42,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:42,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:35:42,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:42,123 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-10-28 08:35:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:42,210 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-28 08:35:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:35:42,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 08:35:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:42,212 INFO L225 Difference]: With dead ends: 38 [2020-10-28 08:35:42,212 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 08:35:42,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 08:35:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-28 08:35:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 08:35:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-28 08:35:42,220 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-10-28 08:35:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:42,221 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-28 08:35:42,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:35:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-28 08:35:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 08:35:42,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:42,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:42,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:35:42,222 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:42,223 INFO L82 PathProgramCache]: Analyzing trace with hash 798942711, now seen corresponding path program 3 times [2020-10-28 08:35:42,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:42,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176465559] [2020-10-28 08:35:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:35:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-28 08:35:42,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:35:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:35:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:43,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:35:43,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:43,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:43,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176465559] [2020-10-28 08:35:43,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:43,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:35:43,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737790099] [2020-10-28 08:35:43,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:35:43,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:43,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:35:43,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:35:43,009 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-10-28 08:35:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:43,102 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-28 08:35:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:35:43,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 08:35:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:43,104 INFO L225 Difference]: With dead ends: 40 [2020-10-28 08:35:43,104 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 08:35:43,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:35:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 08:35:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-28 08:35:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 08:35:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-28 08:35:43,112 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 20 [2020-10-28 08:35:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:43,113 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-28 08:35:43,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:35:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-28 08:35:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 08:35:43,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:43,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:43,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:35:43,115 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:43,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1121397351, now seen corresponding path program 4 times [2020-10-28 08:35:43,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:43,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293702936] [2020-10-28 08:35:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:35:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-28 08:35:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:44,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:35:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:35:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:44,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:44,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:44,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:44,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:44,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:44,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:44,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:44,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293702936] [2020-10-28 08:35:44,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:44,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:35:44,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126939424] [2020-10-28 08:35:44,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:35:44,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:44,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:35:44,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:35:44,254 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2020-10-28 08:35:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:44,357 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-28 08:35:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:35:44,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-28 08:35:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:44,359 INFO L225 Difference]: With dead ends: 42 [2020-10-28 08:35:44,359 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 08:35:44,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:35:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 08:35:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 08:35:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:35:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-28 08:35:44,368 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2020-10-28 08:35:44,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:44,368 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-28 08:35:44,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:35:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-28 08:35:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 08:35:44,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:44,370 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:44,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:35:44,371 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash 267740347, now seen corresponding path program 5 times [2020-10-28 08:35:44,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:44,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776029926] [2020-10-28 08:35:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:45,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:35:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-10-28 08:35:45,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:45,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:35:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 08:35:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:45,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:45,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:45,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:45,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:45,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 08:35:45,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776029926] [2020-10-28 08:35:45,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:45,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:35:45,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015221806] [2020-10-28 08:35:45,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:35:45,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:45,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:35:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:35:45,968 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2020-10-28 08:35:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:46,330 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-28 08:35:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:35:46,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-28 08:35:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:46,333 INFO L225 Difference]: With dead ends: 40 [2020-10-28 08:35:46,333 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 08:35:46,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:35:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 08:35:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-10-28 08:35:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:35:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-28 08:35:46,353 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-10-28 08:35:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:46,353 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-28 08:35:46,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:35:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-28 08:35:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 08:35:46,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:46,355 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:46,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:35:46,355 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:46,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1669564193, now seen corresponding path program 1 times [2020-10-28 08:35:46,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:46,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869942153] [2020-10-28 08:35:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 08:35:47,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-28 08:35:47,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:47,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:35:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:35:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:35:48,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:48,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:48,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:35:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:48,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:48,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:35:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 08:35:48,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869942153] [2020-10-28 08:35:48,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:48,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:35:48,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530671061] [2020-10-28 08:35:48,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:35:48,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:35:48,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:35:48,092 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-10-28 08:35:48,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:48,180 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-10-28 08:35:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:35:48,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-28 08:35:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:48,184 INFO L225 Difference]: With dead ends: 56 [2020-10-28 08:35:48,185 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:35:48,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:35:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:35:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:35:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:35:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-28 08:35:48,194 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2020-10-28 08:35:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:48,194 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-28 08:35:48,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:35:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-28 08:35:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:35:48,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:48,196 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:48,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:35:48,196 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:48,197 INFO L82 PathProgramCache]: Analyzing trace with hash 763958211, now seen corresponding path program 2 times [2020-10-28 08:35:48,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:48,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968638111] [2020-10-28 08:35:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 08:35:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-10-28 08:35:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:35:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:35:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:35:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:35:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 08:35:50,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968638111] [2020-10-28 08:35:50,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:50,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:35:50,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300971064] [2020-10-28 08:35:50,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:35:50,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:50,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:35:50,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:50,495 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 10 states. [2020-10-28 08:35:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:50,640 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-28 08:35:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:35:50,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-28 08:35:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:50,642 INFO L225 Difference]: With dead ends: 58 [2020-10-28 08:35:50,642 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:35:50,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:50,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:35:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 08:35:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:35:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-28 08:35:50,660 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2020-10-28 08:35:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:50,661 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-28 08:35:50,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:35:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-28 08:35:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 08:35:50,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:50,662 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:50,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:35:50,663 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1939996699, now seen corresponding path program 3 times [2020-10-28 08:35:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:50,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870304722] [2020-10-28 08:35:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:35:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2518 [2020-10-28 08:35:53,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:35:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 08:35:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:53,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:35:53,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:35:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:53,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:53,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:35:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:53,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:53,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-28 08:35:53,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870304722] [2020-10-28 08:35:53,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:53,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:35:53,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819903125] [2020-10-28 08:35:53,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:35:53,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:53,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:35:53,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:53,395 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states. [2020-10-28 08:35:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:53,726 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-10-28 08:35:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:35:53,727 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-28 08:35:53,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:53,728 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:35:53,728 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 08:35:53,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:35:53,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 08:35:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-28 08:35:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 08:35:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-28 08:35:53,738 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2020-10-28 08:35:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:53,738 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-28 08:35:53,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:35:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-28 08:35:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 08:35:53,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:53,740 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:53,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:35:53,741 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:53,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:53,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1168418741, now seen corresponding path program 4 times [2020-10-28 08:35:53,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:53,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229921511] [2020-10-28 08:35:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:55,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 08:35:55,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1753 [2020-10-28 08:35:55,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:55,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:35:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:35:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:55,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:35:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:55,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:35:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:55,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:55,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:55,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:35:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:35:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:55,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:35:55,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:55,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:35:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:35:55,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229921511] [2020-10-28 08:35:55,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:55,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:35:55,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813334142] [2020-10-28 08:35:55,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:35:55,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:55,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:35:55,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:35:55,685 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2020-10-28 08:35:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:55,797 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-28 08:35:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:35:55,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-28 08:35:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:55,800 INFO L225 Difference]: With dead ends: 76 [2020-10-28 08:35:55,800 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:35:55,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:35:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:35:55,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:35:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:35:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-10-28 08:35:55,810 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 44 [2020-10-28 08:35:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:55,811 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-10-28 08:35:55,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:35:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-10-28 08:35:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 08:35:55,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:55,812 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:55,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:35:55,813 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:55,813 INFO L82 PathProgramCache]: Analyzing trace with hash 995688941, now seen corresponding path program 5 times [2020-10-28 08:35:55,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:55,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030747286] [2020-10-28 08:35:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:55,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 08:35:57,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-28 08:35:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:57,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:35:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 08:35:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:58,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:35:58,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:58,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:35:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:58,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:35:58,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:58,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:35:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:58,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:58,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:35:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:58,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-28 08:35:58,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030747286] [2020-10-28 08:35:58,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:58,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:35:58,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907770781] [2020-10-28 08:35:58,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:35:58,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:58,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:35:58,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:35:58,093 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 12 states. [2020-10-28 08:35:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:58,585 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-10-28 08:35:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:35:58,585 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-28 08:35:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:58,586 INFO L225 Difference]: With dead ends: 62 [2020-10-28 08:35:58,587 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 08:35:58,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:35:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 08:35:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-10-28 08:35:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:35:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-28 08:35:58,606 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 46 [2020-10-28 08:35:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:58,610 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-28 08:35:58,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:35:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-28 08:35:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 08:35:58,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:58,614 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:58,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:35:58,615 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1767363155, now seen corresponding path program 6 times [2020-10-28 08:35:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:58,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255583828] [2020-10-28 08:35:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 08:36:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:01,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2377 [2020-10-28 08:36:01,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:01,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:36:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:36:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:01,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:01,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:01,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:01,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:36:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:01,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:01,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:36:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:01,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:01,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:36:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:01,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:01,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:01,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:01,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:36:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 08:36:01,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255583828] [2020-10-28 08:36:01,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:01,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:36:01,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642450559] [2020-10-28 08:36:01,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:36:01,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:01,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:36:01,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:36:01,227 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 12 states. [2020-10-28 08:36:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:01,377 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-10-28 08:36:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:36:01,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-28 08:36:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:01,378 INFO L225 Difference]: With dead ends: 94 [2020-10-28 08:36:01,378 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:36:01,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:36:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:36:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:36:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:36:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-28 08:36:01,394 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2020-10-28 08:36:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:01,394 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-28 08:36:01,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:36:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-28 08:36:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 08:36:01,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:01,400 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:01,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:36:01,401 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:01,402 INFO L82 PathProgramCache]: Analyzing trace with hash -993044107, now seen corresponding path program 7 times [2020-10-28 08:36:01,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:01,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14351017] [2020-10-28 08:36:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 08:36:06,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4638 [2020-10-28 08:36:06,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:36:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:36:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:36:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:36:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:06,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:36:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:36:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:06,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 81 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 08:36:06,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14351017] [2020-10-28 08:36:06,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:06,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:36:06,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271304136] [2020-10-28 08:36:06,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:36:06,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:06,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:36:06,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:36:06,293 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 13 states. [2020-10-28 08:36:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:06,439 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-10-28 08:36:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:36:06,439 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-28 08:36:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:06,440 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:36:06,440 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:36:06,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:36:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:36:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:36:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:36:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-10-28 08:36:06,450 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 56 [2020-10-28 08:36:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:06,450 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-10-28 08:36:06,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:36:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-10-28 08:36:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 08:36:06,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:06,451 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:06,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:36:06,452 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 545366039, now seen corresponding path program 8 times [2020-10-28 08:36:06,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:06,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13434628] [2020-10-28 08:36:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:36:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3334 [2020-10-28 08:36:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:09,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:36:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 08:36:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:10,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:10,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:10,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:10,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:36:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:10,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:36:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:10,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:10,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:36:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:10,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:36:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:10,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:10,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:10,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 08:36:10,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13434628] [2020-10-28 08:36:10,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:10,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:36:10,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318166206] [2020-10-28 08:36:10,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:36:10,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:10,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:36:10,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:36:10,137 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2020-10-28 08:36:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:10,810 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-10-28 08:36:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:36:10,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-28 08:36:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:10,816 INFO L225 Difference]: With dead ends: 74 [2020-10-28 08:36:10,816 INFO L226 Difference]: Without dead ends: 71 [2020-10-28 08:36:10,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:36:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-28 08:36:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-28 08:36:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:36:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-28 08:36:10,843 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 58 [2020-10-28 08:36:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:10,843 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-28 08:36:10,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:36:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-28 08:36:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 08:36:10,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:10,844 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:10,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:36:10,844 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:10,847 INFO L82 PathProgramCache]: Analyzing trace with hash 909944445, now seen corresponding path program 9 times [2020-10-28 08:36:10,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:10,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252721795] [2020-10-28 08:36:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 08:36:14,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:14,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3678 [2020-10-28 08:36:14,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:36:14,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:14,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:36:14,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:14,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:14,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 08:36:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:14,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:14,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:36:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:14,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:14,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:36:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:14,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:14,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:14,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:36:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:14,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:14,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:14,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:14,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:14,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:14,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 08:36:14,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252721795] [2020-10-28 08:36:14,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:14,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:36:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024995388] [2020-10-28 08:36:14,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:36:14,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:36:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:36:14,785 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 14 states. [2020-10-28 08:36:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:14,951 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-10-28 08:36:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:36:14,952 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-28 08:36:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:14,953 INFO L225 Difference]: With dead ends: 114 [2020-10-28 08:36:14,953 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:36:14,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:36:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:36:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 08:36:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 08:36:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-28 08:36:14,976 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2020-10-28 08:36:14,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:14,977 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-28 08:36:14,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:36:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-28 08:36:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:36:14,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:14,978 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:14,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:36:14,978 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:14,979 INFO L82 PathProgramCache]: Analyzing trace with hash -586642785, now seen corresponding path program 10 times [2020-10-28 08:36:14,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:14,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085695133] [2020-10-28 08:36:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:18,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3480 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:36:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:36:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:18,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:36:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:18,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:18,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:18,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:18,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:36:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:18,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:18,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:18,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:18,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:18,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:18,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:36:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:18,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:18,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 8 proven. 121 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 08:36:18,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085695133] [2020-10-28 08:36:18,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:18,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:36:18,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698246359] [2020-10-28 08:36:18,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:36:18,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:18,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:36:18,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:36:18,763 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2020-10-28 08:36:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:18,949 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2020-10-28 08:36:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:36:18,951 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-28 08:36:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:18,952 INFO L225 Difference]: With dead ends: 116 [2020-10-28 08:36:18,952 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:36:18,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:36:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:36:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:36:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:36:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-10-28 08:36:18,969 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 68 [2020-10-28 08:36:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:18,969 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-10-28 08:36:18,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:36:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-10-28 08:36:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 08:36:18,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:18,970 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:18,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:36:18,971 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash 7073345, now seen corresponding path program 11 times [2020-10-28 08:36:18,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:18,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739175929] [2020-10-28 08:36:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:19,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 08:36:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3826 [2020-10-28 08:36:22,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:22,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 08:36:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 08:36:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:23,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:36:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:23,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:36:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:23,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:23,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:23,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:36:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:23,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:23,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:36:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:23,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:23,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 8 proven. 86 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 08:36:23,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739175929] [2020-10-28 08:36:23,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:23,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:36:23,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117471346] [2020-10-28 08:36:23,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:36:23,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:23,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:36:23,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:36:23,189 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 15 states. [2020-10-28 08:36:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:24,143 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-10-28 08:36:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 08:36:24,143 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-28 08:36:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:24,145 INFO L225 Difference]: With dead ends: 86 [2020-10-28 08:36:24,145 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 08:36:24,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:36:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 08:36:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-28 08:36:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:36:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-10-28 08:36:24,162 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 70 [2020-10-28 08:36:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:24,162 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-10-28 08:36:24,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:36:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-10-28 08:36:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 08:36:24,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:24,168 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:24,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:36:24,168 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1187829081, now seen corresponding path program 12 times [2020-10-28 08:36:24,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:24,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772126890] [2020-10-28 08:36:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3705 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:36:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:36:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:28,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:36:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:36:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:28,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:36:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:36:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 10 proven. 144 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 08:36:28,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772126890] [2020-10-28 08:36:28,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:28,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:36:28,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281844638] [2020-10-28 08:36:28,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:36:28,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:28,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:36:28,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:36:28,146 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 16 states. [2020-10-28 08:36:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:28,337 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-10-28 08:36:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:36:28,337 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-28 08:36:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:28,338 INFO L225 Difference]: With dead ends: 134 [2020-10-28 08:36:28,339 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 08:36:28,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:36:28,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 08:36:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 08:36:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:36:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-10-28 08:36:28,350 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2020-10-28 08:36:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:28,351 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-10-28 08:36:28,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:36:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-10-28 08:36:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:36:28,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:28,352 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:28,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:36:28,353 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash -424678455, now seen corresponding path program 13 times [2020-10-28 08:36:28,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:28,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471338255] [2020-10-28 08:36:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:32,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4456 [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 08:36:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:36:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:33,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:36:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:36:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:36:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:36:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 10 proven. 109 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-28 08:36:33,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471338255] [2020-10-28 08:36:33,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:33,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:36:33,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726911227] [2020-10-28 08:36:33,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:36:33,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:33,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:36:33,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:36:33,198 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 16 states. [2020-10-28 08:36:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:34,226 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-10-28 08:36:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:36:34,227 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-28 08:36:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:34,229 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:36:34,229 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 08:36:34,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2020-10-28 08:36:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 08:36:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-28 08:36:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:36:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-28 08:36:34,240 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 80 [2020-10-28 08:36:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:34,241 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-28 08:36:34,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:36:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-28 08:36:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 08:36:34,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:34,242 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:34,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:36:34,242 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:34,243 INFO L82 PathProgramCache]: Analyzing trace with hash 310714415, now seen corresponding path program 14 times [2020-10-28 08:36:34,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:34,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896316961] [2020-10-28 08:36:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4613 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:36:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:36:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:36:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:36:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:39,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:36:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:36:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:39,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:39,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:36:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 169 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-28 08:36:39,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896316961] [2020-10-28 08:36:39,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:39,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:36:39,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040866445] [2020-10-28 08:36:39,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:36:39,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:39,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:36:39,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:36:39,162 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 17 states. [2020-10-28 08:36:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:39,333 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-10-28 08:36:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:36:39,334 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-10-28 08:36:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:39,335 INFO L225 Difference]: With dead ends: 152 [2020-10-28 08:36:39,335 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 08:36:39,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:36:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 08:36:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 08:36:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 08:36:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-28 08:36:39,357 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 88 [2020-10-28 08:36:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:39,357 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-28 08:36:39,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:36:39,357 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-28 08:36:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 08:36:39,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:39,358 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:39,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:36:39,359 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:39,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:39,359 INFO L82 PathProgramCache]: Analyzing trace with hash -970694959, now seen corresponding path program 15 times [2020-10-28 08:36:39,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:39,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523411326] [2020-10-28 08:36:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:36:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:44,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:44,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:36:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:36:44,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:36:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:36:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:44,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:44,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:36:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:44,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:44,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:36:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:36:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-28 08:36:44,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523411326] [2020-10-28 08:36:44,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:44,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:36:44,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600950815] [2020-10-28 08:36:44,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:36:44,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:44,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:36:44,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:36:44,721 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 18 states. [2020-10-28 08:36:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:44,957 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-10-28 08:36:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:36:44,957 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-10-28 08:36:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:44,959 INFO L225 Difference]: With dead ends: 154 [2020-10-28 08:36:44,959 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:36:44,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:36:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:36:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 08:36:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 08:36:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-28 08:36:44,970 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2020-10-28 08:36:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:44,970 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-28 08:36:44,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:36:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-28 08:36:44,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 08:36:44,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:44,971 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:44,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:36:44,972 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:44,972 INFO L82 PathProgramCache]: Analyzing trace with hash 250510579, now seen corresponding path program 16 times [2020-10-28 08:36:44,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:44,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351245139] [2020-10-28 08:36:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 08:36:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:50,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 08:36:50,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:50,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:50,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:36:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:50,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:36:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:50,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:50,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:36:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:36:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:50,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:50,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:36:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:36:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:50,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 12 proven. 165 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 08:36:50,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351245139] [2020-10-28 08:36:50,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:50,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:36:50,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383462034] [2020-10-28 08:36:50,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:36:50,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:36:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:36:50,483 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 18 states. [2020-10-28 08:36:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:51,913 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2020-10-28 08:36:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 08:36:51,917 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 92 [2020-10-28 08:36:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:51,918 INFO L225 Difference]: With dead ends: 108 [2020-10-28 08:36:51,918 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 08:36:51,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=1315, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 08:36:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 08:36:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-28 08:36:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:36:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-28 08:36:51,930 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 92 [2020-10-28 08:36:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:51,930 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-28 08:36:51,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:36:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-28 08:36:51,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 08:36:51,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:51,937 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:51,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:36:51,938 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 853337945, now seen corresponding path program 17 times [2020-10-28 08:36:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:51,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857004755] [2020-10-28 08:36:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 08:36:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:36:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:36:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:56,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:36:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:36:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:36:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:36:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:36:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:36:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:36:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:36:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:36:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:57,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:57,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:57,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 14 proven. 225 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-28 08:36:57,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857004755] [2020-10-28 08:36:57,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:57,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:36:57,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601738419] [2020-10-28 08:36:57,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:36:57,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:57,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:36:57,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:36:57,322 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 19 states. [2020-10-28 08:36:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:57,580 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-10-28 08:36:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:36:57,583 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-28 08:36:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:57,584 INFO L225 Difference]: With dead ends: 172 [2020-10-28 08:36:57,584 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 08:36:57,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:36:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 08:36:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 08:36:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:36:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2020-10-28 08:36:57,602 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2020-10-28 08:36:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:57,602 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2020-10-28 08:36:57,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:36:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2020-10-28 08:36:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 08:36:57,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:57,605 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:57,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:36:57,606 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash 444154619, now seen corresponding path program 18 times [2020-10-28 08:36:57,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:57,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510312457] [2020-10-28 08:36:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:02,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:37:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:02,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:02,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:02,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:02,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:37:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:02,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:37:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:37:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:02,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:37:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:03,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:03,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:37:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:03,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:03,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:03,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:03,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:37:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:03,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:03,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:37:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 14 proven. 256 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-28 08:37:03,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510312457] [2020-10-28 08:37:03,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:03,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:37:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827936992] [2020-10-28 08:37:03,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:37:03,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:37:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:37:03,031 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 20 states. [2020-10-28 08:37:03,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:03,302 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2020-10-28 08:37:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:37:03,303 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 102 [2020-10-28 08:37:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:03,305 INFO L225 Difference]: With dead ends: 174 [2020-10-28 08:37:03,305 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 08:37:03,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:37:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 08:37:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 08:37:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:37:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-10-28 08:37:03,317 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2020-10-28 08:37:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:03,317 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-10-28 08:37:03,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:37:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-10-28 08:37:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 08:37:03,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:03,318 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:03,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:37:03,319 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:03,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1938997731, now seen corresponding path program 19 times [2020-10-28 08:37:03,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:03,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154485789] [2020-10-28 08:37:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 08:37:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 08:37:08,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 08:37:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 08:37:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:37:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:37:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:08,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:37:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:08,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:37:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:37:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:08,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:37:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 08:37:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:37:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:08,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:08,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:08,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:08,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:08,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 14 proven. 205 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-28 08:37:08,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154485789] [2020-10-28 08:37:08,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:08,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:37:08,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124899916] [2020-10-28 08:37:08,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:37:08,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:08,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:37:08,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:37:08,881 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 19 states. [2020-10-28 08:37:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:10,319 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2020-10-28 08:37:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 08:37:10,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2020-10-28 08:37:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:10,324 INFO L225 Difference]: With dead ends: 120 [2020-10-28 08:37:10,324 INFO L226 Difference]: Without dead ends: 117 [2020-10-28 08:37:10,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 08:37:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-28 08:37:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-28 08:37:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 08:37:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-28 08:37:10,337 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 104 [2020-10-28 08:37:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:10,338 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-28 08:37:10,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:37:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-28 08:37:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 08:37:10,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:10,339 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:10,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:37:10,339 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:10,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1027923587, now seen corresponding path program 20 times [2020-10-28 08:37:10,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:10,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360764511] [2020-10-28 08:37:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 08:37:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:37:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:37:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:37:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:37:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:37:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 08:37:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:37:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:15,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:37:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 16 proven. 289 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-28 08:37:15,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360764511] [2020-10-28 08:37:15,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:15,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:37:15,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776950128] [2020-10-28 08:37:15,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:37:15,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:15,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:37:15,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:37:15,761 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 21 states. [2020-10-28 08:37:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:15,951 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-10-28 08:37:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 08:37:15,952 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-10-28 08:37:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:15,953 INFO L225 Difference]: With dead ends: 192 [2020-10-28 08:37:15,954 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 08:37:15,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:37:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 08:37:15,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-28 08:37:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 08:37:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2020-10-28 08:37:15,966 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 112 [2020-10-28 08:37:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:15,967 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2020-10-28 08:37:15,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:37:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2020-10-28 08:37:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 08:37:15,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:15,969 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:15,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:37:15,969 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:15,970 INFO L82 PathProgramCache]: Analyzing trace with hash 488298277, now seen corresponding path program 21 times [2020-10-28 08:37:15,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:15,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290069835] [2020-10-28 08:37:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 08:37:21,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 08:37:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:21,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:37:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:21,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:37:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:37:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:37:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:21,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:37:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:37:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:21,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:37:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:37:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 16 proven. 270 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-28 08:37:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290069835] [2020-10-28 08:37:21,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:21,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:37:21,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426173029] [2020-10-28 08:37:21,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:37:21,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:21,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:37:21,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:37:21,601 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 21 states. [2020-10-28 08:37:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:23,412 INFO L93 Difference]: Finished difference Result 130 states and 131 transitions. [2020-10-28 08:37:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 08:37:23,413 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 114 [2020-10-28 08:37:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:23,415 INFO L225 Difference]: With dead ends: 130 [2020-10-28 08:37:23,415 INFO L226 Difference]: Without dead ends: 127 [2020-10-28 08:37:23,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 08:37:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-28 08:37:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-28 08:37:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 08:37:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2020-10-28 08:37:23,426 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 114 [2020-10-28 08:37:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:23,426 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2020-10-28 08:37:23,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:37:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2020-10-28 08:37:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 08:37:23,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:23,428 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:23,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:37:23,428 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1500311435, now seen corresponding path program 22 times [2020-10-28 08:37:23,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:23,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884637538] [2020-10-28 08:37:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 08:37:28,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 08:37:28,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:37:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:37:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:37:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:37:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:37:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:37:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:37:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:37:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:37:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:37:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 08:37:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:28,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:28,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:28,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 18 proven. 324 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-28 08:37:28,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884637538] [2020-10-28 08:37:28,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:28,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:37:28,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112183199] [2020-10-28 08:37:28,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:37:28,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:28,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:37:28,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:37:28,940 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 22 states. [2020-10-28 08:37:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:29,219 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2020-10-28 08:37:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:37:29,219 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2020-10-28 08:37:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:29,220 INFO L225 Difference]: With dead ends: 210 [2020-10-28 08:37:29,221 INFO L226 Difference]: Without dead ends: 128 [2020-10-28 08:37:29,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:37:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-28 08:37:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-28 08:37:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 08:37:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-28 08:37:29,232 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 122 [2020-10-28 08:37:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:29,233 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-28 08:37:29,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:37:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-28 08:37:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 08:37:29,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:29,234 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:29,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:37:29,234 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash -119142995, now seen corresponding path program 23 times [2020-10-28 08:37:29,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:29,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469131170] [2020-10-28 08:37:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 08:37:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:37:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:37:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:37:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:37:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:37:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:37:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:37:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:37:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:37:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:34,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:34,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 18 proven. 361 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-28 08:37:34,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469131170] [2020-10-28 08:37:34,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:34,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 08:37:34,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111311338] [2020-10-28 08:37:34,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 08:37:34,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:34,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 08:37:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:37:34,735 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 23 states. [2020-10-28 08:37:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:34,997 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-10-28 08:37:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 08:37:34,998 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2020-10-28 08:37:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:35,000 INFO L225 Difference]: With dead ends: 212 [2020-10-28 08:37:35,001 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 08:37:35,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:37:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 08:37:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-28 08:37:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 08:37:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2020-10-28 08:37:35,016 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 124 [2020-10-28 08:37:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:35,016 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2020-10-28 08:37:35,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 08:37:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2020-10-28 08:37:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 08:37:35,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:35,018 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:35,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:37:35,018 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:35,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1636689073, now seen corresponding path program 24 times [2020-10-28 08:37:35,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:35,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156777696] [2020-10-28 08:37:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 08:37:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 08:37:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:37:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:37:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:37:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:37:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:37:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:37:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 08:37:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 08:37:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:37:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:40,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:40,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:40,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:40,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 18 proven. 322 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-28 08:37:40,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156777696] [2020-10-28 08:37:40,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:40,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:37:40,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044950293] [2020-10-28 08:37:40,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:37:40,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:40,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:37:40,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:37:40,703 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 22 states. [2020-10-28 08:37:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:42,785 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2020-10-28 08:37:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 08:37:42,786 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2020-10-28 08:37:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:42,788 INFO L225 Difference]: With dead ends: 142 [2020-10-28 08:37:42,788 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 08:37:42,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 08:37:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 08:37:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-28 08:37:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 08:37:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2020-10-28 08:37:42,802 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 126 [2020-10-28 08:37:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:42,802 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2020-10-28 08:37:42,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:37:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2020-10-28 08:37:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 08:37:42,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:42,804 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:42,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:37:42,804 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 343566773, now seen corresponding path program 25 times [2020-10-28 08:37:42,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:42,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289933100] [2020-10-28 08:37:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 08:37:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:37:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:48,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:37:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:37:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:37:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:37:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:37:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:48,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 08:37:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:48,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 08:37:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:37:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:37:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:48,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:48,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 20 proven. 400 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-28 08:37:48,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289933100] [2020-10-28 08:37:48,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:48,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 08:37:48,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696260394] [2020-10-28 08:37:48,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 08:37:48,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:48,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 08:37:48,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:37:48,388 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 24 states. [2020-10-28 08:37:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:48,687 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2020-10-28 08:37:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:37:48,689 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 134 [2020-10-28 08:37:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:48,690 INFO L225 Difference]: With dead ends: 230 [2020-10-28 08:37:48,690 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 08:37:48,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:37:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 08:37:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-28 08:37:48,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 08:37:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-10-28 08:37:48,707 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2020-10-28 08:37:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:48,709 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-10-28 08:37:48,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 08:37:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-10-28 08:37:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 08:37:48,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:48,711 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:48,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:37:48,712 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:48,713 INFO L82 PathProgramCache]: Analyzing trace with hash 912874711, now seen corresponding path program 26 times [2020-10-28 08:37:48,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:48,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307392023] [2020-10-28 08:37:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:53,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:53,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 08:37:53,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:37:53,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:53,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 08:37:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 08:37:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:37:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:37:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:37:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:37:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 08:37:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:37:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:37:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:37:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:37:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 08:37:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 20 proven. 441 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-28 08:37:54,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307392023] [2020-10-28 08:37:54,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:54,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:37:54,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771047187] [2020-10-28 08:37:54,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:37:54,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:54,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:37:54,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:37:54,309 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 25 states. [2020-10-28 08:37:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:54,560 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-10-28 08:37:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 08:37:54,561 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2020-10-28 08:37:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:54,563 INFO L225 Difference]: With dead ends: 232 [2020-10-28 08:37:54,563 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 08:37:54,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:37:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 08:37:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-28 08:37:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-28 08:37:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-10-28 08:37:54,581 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 136 [2020-10-28 08:37:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:54,581 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-10-28 08:37:54,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:37:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-10-28 08:37:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 08:37:54,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:54,582 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:54,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:37:54,583 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1738010759, now seen corresponding path program 27 times [2020-10-28 08:37:54,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:54,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859486266] [2020-10-28 08:37:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 08:37:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:00,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:00,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:38:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:38:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:38:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:38:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:38:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:38:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:38:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 08:38:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:38:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:38:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:00,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:00,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:00,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 20 proven. 412 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2020-10-28 08:38:00,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859486266] [2020-10-28 08:38:00,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:00,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 08:38:00,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078539910] [2020-10-28 08:38:00,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 08:38:00,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:00,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 08:38:00,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:38:00,320 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 24 states. [2020-10-28 08:38:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:02,799 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2020-10-28 08:38:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 08:38:02,799 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 138 [2020-10-28 08:38:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:02,801 INFO L225 Difference]: With dead ends: 154 [2020-10-28 08:38:02,801 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 08:38:02,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=269, Invalid=2593, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 08:38:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 08:38:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-28 08:38:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 08:38:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2020-10-28 08:38:02,816 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 138 [2020-10-28 08:38:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:02,817 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2020-10-28 08:38:02,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 08:38:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2020-10-28 08:38:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 08:38:02,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:02,818 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:02,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:38:02,818 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash -696871969, now seen corresponding path program 28 times [2020-10-28 08:38:02,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:02,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14693248] [2020-10-28 08:38:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 08:38:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:38:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:38:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:38:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:38:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:38:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:38:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:38:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 08:38:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:38:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:38:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:08,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 08:38:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 22 proven. 484 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-28 08:38:08,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14693248] [2020-10-28 08:38:08,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:08,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 08:38:08,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579457424] [2020-10-28 08:38:08,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 08:38:08,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:08,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 08:38:08,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 08:38:08,571 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 26 states. [2020-10-28 08:38:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:08,879 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2020-10-28 08:38:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 08:38:08,880 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2020-10-28 08:38:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:08,881 INFO L225 Difference]: With dead ends: 250 [2020-10-28 08:38:08,881 INFO L226 Difference]: Without dead ends: 152 [2020-10-28 08:38:08,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 08:38:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-28 08:38:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-28 08:38:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-28 08:38:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-10-28 08:38:08,893 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 146 [2020-10-28 08:38:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:08,893 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-10-28 08:38:08,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 08:38:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-10-28 08:38:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 08:38:08,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:08,894 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:08,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:38:08,895 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1879579647, now seen corresponding path program 29 times [2020-10-28 08:38:08,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:08,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609599185] [2020-10-28 08:38:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:13,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-28 08:38:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:13,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 08:38:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:38:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:38:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:38:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:14,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:38:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:38:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:38:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:38:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:38:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:38:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 08:38:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 08:38:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:14,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 22 proven. 465 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-10-28 08:38:14,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609599185] [2020-10-28 08:38:14,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:14,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:38:14,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016362483] [2020-10-28 08:38:14,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:38:14,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:14,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:38:14,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:38:14,856 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 25 states. [2020-10-28 08:38:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:17,707 INFO L93 Difference]: Finished difference Result 164 states and 165 transitions. [2020-10-28 08:38:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 08:38:17,708 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 148 [2020-10-28 08:38:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:17,710 INFO L225 Difference]: With dead ends: 164 [2020-10-28 08:38:17,710 INFO L226 Difference]: Without dead ends: 161 [2020-10-28 08:38:17,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=280, Invalid=2912, Unknown=0, NotChecked=0, Total=3192 [2020-10-28 08:38:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-28 08:38:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-28 08:38:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-28 08:38:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-10-28 08:38:17,726 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 148 [2020-10-28 08:38:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:17,726 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-10-28 08:38:17,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:38:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-10-28 08:38:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 08:38:17,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:17,728 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:17,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:38:17,728 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1062035559, now seen corresponding path program 30 times [2020-10-28 08:38:17,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:17,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945827146] [2020-10-28 08:38:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:22,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:22,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 08:38:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:38:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:23,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:38:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:38:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:38:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:38:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:38:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:38:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:38:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:38:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 08:38:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 08:38:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:23,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 08:38:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:23,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:23,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 24 proven. 529 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-28 08:38:23,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945827146] [2020-10-28 08:38:23,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:23,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 08:38:23,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728766280] [2020-10-28 08:38:23,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 08:38:23,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 08:38:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:38:23,471 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 27 states. [2020-10-28 08:38:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:23,798 INFO L93 Difference]: Finished difference Result 268 states and 270 transitions. [2020-10-28 08:38:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 08:38:23,799 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 156 [2020-10-28 08:38:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:23,801 INFO L225 Difference]: With dead ends: 268 [2020-10-28 08:38:23,802 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 08:38:23,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:38:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 08:38:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-28 08:38:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-28 08:38:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2020-10-28 08:38:23,824 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 156 [2020-10-28 08:38:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:23,825 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2020-10-28 08:38:23,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 08:38:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2020-10-28 08:38:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 08:38:23,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:23,826 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:23,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:38:23,826 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:23,827 INFO L82 PathProgramCache]: Analyzing trace with hash 164261385, now seen corresponding path program 31 times [2020-10-28 08:38:23,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:23,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331777887] [2020-10-28 08:38:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 08:38:29,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5253 [2020-10-28 08:38:29,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 08:38:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 08:38:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:38:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:38:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:38:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:38:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:38:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 08:38:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 08:38:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:38:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:38:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:38:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:29,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 08:38:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:29,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 08:38:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:29,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:29,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:29,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:29,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:29,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:29,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 24 proven. 576 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-28 08:38:29,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331777887] [2020-10-28 08:38:29,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:29,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 08:38:29,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121506887] [2020-10-28 08:38:29,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 08:38:29,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 08:38:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:38:29,795 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 28 states. [2020-10-28 08:38:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:30,011 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2020-10-28 08:38:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 08:38:30,012 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2020-10-28 08:38:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:30,014 INFO L225 Difference]: With dead ends: 270 [2020-10-28 08:38:30,014 INFO L226 Difference]: Without dead ends: 164 [2020-10-28 08:38:30,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:38:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-28 08:38:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-28 08:38:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 08:38:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-10-28 08:38:30,027 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 158 [2020-10-28 08:38:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:30,028 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-10-28 08:38:30,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 08:38:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-10-28 08:38:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 08:38:30,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:30,028 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:30,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:38:30,029 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:30,029 INFO L82 PathProgramCache]: Analyzing trace with hash 691706667, now seen corresponding path program 32 times [2020-10-28 08:38:30,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:30,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831961039] [2020-10-28 08:38:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:35,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 08:38:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:38:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:38:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:38:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 08:38:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:38:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:38:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:38:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:38:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 08:38:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:38:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 08:38:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 08:38:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 24 proven. 571 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2020-10-28 08:38:36,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831961039] [2020-10-28 08:38:36,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:36,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 08:38:36,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625772441] [2020-10-28 08:38:36,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 08:38:36,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 08:38:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:38:36,315 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 27 states. [2020-10-28 08:38:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:39,730 INFO L93 Difference]: Finished difference Result 176 states and 177 transitions. [2020-10-28 08:38:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 08:38:39,731 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 160 [2020-10-28 08:38:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:39,733 INFO L225 Difference]: With dead ends: 176 [2020-10-28 08:38:39,733 INFO L226 Difference]: Without dead ends: 173 [2020-10-28 08:38:39,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=327, Invalid=3455, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 08:38:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-28 08:38:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2020-10-28 08:38:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-28 08:38:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-10-28 08:38:39,750 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 160 [2020-10-28 08:38:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:39,750 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-10-28 08:38:39,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 08:38:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-10-28 08:38:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 08:38:39,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:39,751 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:39,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:38:39,752 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1255977583, now seen corresponding path program 33 times [2020-10-28 08:38:39,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:39,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939026080] [2020-10-28 08:38:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 08:38:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5449 [2020-10-28 08:38:45,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 08:38:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 08:38:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:38:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:38:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 08:38:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 08:38:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:38:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:38:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:38:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:38:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 08:38:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:38:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 08:38:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 08:38:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 08:38:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 26 proven. 625 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-28 08:38:45,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939026080] [2020-10-28 08:38:45,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:45,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 08:38:45,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821612145] [2020-10-28 08:38:45,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 08:38:45,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 08:38:45,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:38:45,979 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 29 states. [2020-10-28 08:38:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:46,184 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2020-10-28 08:38:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 08:38:46,185 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 168 [2020-10-28 08:38:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:46,187 INFO L225 Difference]: With dead ends: 288 [2020-10-28 08:38:46,188 INFO L226 Difference]: Without dead ends: 174 [2020-10-28 08:38:46,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:38:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-28 08:38:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-28 08:38:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-28 08:38:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2020-10-28 08:38:46,205 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 168 [2020-10-28 08:38:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:46,205 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2020-10-28 08:38:46,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 08:38:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2020-10-28 08:38:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 08:38:46,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:46,207 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:46,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:38:46,207 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:46,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1113520179, now seen corresponding path program 34 times [2020-10-28 08:38:46,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:46,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863775093] [2020-10-28 08:38:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 08:38:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:38:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:38:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:38:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:38:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:38:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:38:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 08:38:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:38:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:38:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 08:38:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 08:38:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 08:38:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 08:38:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:52,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 26 proven. 676 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-28 08:38:52,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863775093] [2020-10-28 08:38:52,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:52,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:38:52,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251558696] [2020-10-28 08:38:52,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:38:52,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:52,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:38:52,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:38:52,087 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 30 states. [2020-10-28 08:38:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:52,490 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2020-10-28 08:38:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 08:38:52,491 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 170 [2020-10-28 08:38:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:52,492 INFO L225 Difference]: With dead ends: 290 [2020-10-28 08:38:52,492 INFO L226 Difference]: Without dead ends: 176 [2020-10-28 08:38:52,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:38:52,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-28 08:38:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2020-10-28 08:38:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 08:38:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-10-28 08:38:52,513 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2020-10-28 08:38:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:52,513 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-10-28 08:38:52,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:38:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-10-28 08:38:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 08:38:52,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:52,516 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:52,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:38:52,517 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:52,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1868202581, now seen corresponding path program 35 times [2020-10-28 08:38:52,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:52,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569893459] [2020-10-28 08:38:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 08:38:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:38:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5525 [2020-10-28 08:38:58,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:58,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-28 08:38:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 08:38:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:38:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:38:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:38:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:38:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:38:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:38:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:38:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:38:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 08:38:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 08:38:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 08:38:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 08:38:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-28 08:38:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 26 proven. 647 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2020-10-28 08:38:59,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569893459] [2020-10-28 08:38:59,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:59,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 08:38:59,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854776196] [2020-10-28 08:38:59,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 08:38:59,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 08:38:59,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:38:59,188 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 28 states. [2020-10-28 08:39:02,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:02,778 INFO L93 Difference]: Finished difference Result 188 states and 189 transitions. [2020-10-28 08:39:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 08:39:02,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 172 [2020-10-28 08:39:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:02,781 INFO L225 Difference]: With dead ends: 188 [2020-10-28 08:39:02,781 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 08:39:02,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=340, Invalid=3820, Unknown=0, NotChecked=0, Total=4160 [2020-10-28 08:39:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 08:39:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2020-10-28 08:39:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 08:39:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-10-28 08:39:02,799 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 172 [2020-10-28 08:39:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:02,799 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-10-28 08:39:02,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 08:39:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-10-28 08:39:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 08:39:02,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:02,801 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:02,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:39:02,801 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2141612731, now seen corresponding path program 36 times [2020-10-28 08:39:02,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:02,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985463182] [2020-10-28 08:39:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:07,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 08:39:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:39:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:07,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 08:39:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 08:39:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:39:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:39:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:39:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:39:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:39:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:39:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:39:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 08:39:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 08:39:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 08:39:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 08:39:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 08:39:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-28 08:39:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-28 08:39:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:08,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:08,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:08,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:39:08,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:08,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:39:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 28 proven. 729 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2020-10-28 08:39:08,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985463182] [2020-10-28 08:39:08,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:08,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 08:39:08,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629722422] [2020-10-28 08:39:08,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 08:39:08,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:08,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 08:39:08,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:39:08,707 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 31 states. [2020-10-28 08:39:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:08,911 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2020-10-28 08:39:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 08:39:08,912 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 180 [2020-10-28 08:39:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:08,914 INFO L225 Difference]: With dead ends: 308 [2020-10-28 08:39:08,914 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 08:39:08,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:39:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 08:39:08,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2020-10-28 08:39:08,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-28 08:39:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2020-10-28 08:39:08,931 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 180 [2020-10-28 08:39:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:08,931 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2020-10-28 08:39:08,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 08:39:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2020-10-28 08:39:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 08:39:08,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:08,933 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:08,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 08:39:08,933 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash -40029603, now seen corresponding path program 37 times [2020-10-28 08:39:08,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:08,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377300185] [2020-10-28 08:39:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:14,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:14,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 08:39:14,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5418 [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 08:39:14,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:39:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:39:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:39:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:39:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 08:39:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 08:39:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:39:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:39:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:39:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 08:39:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 08:39:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 08:39:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 08:39:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-28 08:39:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:39:15,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 28 proven. 756 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2020-10-28 08:39:15,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377300185] [2020-10-28 08:39:15,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:15,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:39:15,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976853620] [2020-10-28 08:39:15,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:39:15,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:15,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:39:15,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:39:15,653 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 30 states. [2020-10-28 08:39:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:20,099 INFO L93 Difference]: Finished difference Result 198 states and 199 transitions. [2020-10-28 08:39:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-28 08:39:20,100 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 182 [2020-10-28 08:39:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:20,102 INFO L225 Difference]: With dead ends: 198 [2020-10-28 08:39:20,102 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 08:39:20,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=397, Invalid=4573, Unknown=0, NotChecked=0, Total=4970 [2020-10-28 08:39:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 08:39:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2020-10-28 08:39:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 08:39:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2020-10-28 08:39:20,122 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 182 [2020-10-28 08:39:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:20,122 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2020-10-28 08:39:20,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:39:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2020-10-28 08:39:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 08:39:20,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:20,124 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:20,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 08:39:20,124 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1516016323, now seen corresponding path program 38 times [2020-10-28 08:39:20,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:20,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353461381] [2020-10-28 08:39:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking...