/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:57:01,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:57:01,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:57:01,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:57:01,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:57:01,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:57:01,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:57:01,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:57:01,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:57:01,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:57:01,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:57:01,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:57:01,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:57:01,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:57:01,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:57:01,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:57:01,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:57:01,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:57:01,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:57:01,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:57:01,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:57:01,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:57:01,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:57:01,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:57:01,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:57:01,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:57:01,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:57:01,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:57:01,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:57:01,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:57:01,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:57:01,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:57:01,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:57:01,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:57:01,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:57:01,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:57:01,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:57:01,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:57:01,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:57:01,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:57:01,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:57:01,665 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 [2020-10-26 23:57:01,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:57:01,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:57:01,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:57:01,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:57:01,724 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:57:01,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:57:01,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:57:01,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:57:01,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:57:01,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:57:01,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:57:01,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:57:01,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:57:01,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:57:01,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:57:01,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:57:01,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:57:01,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:57:01,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:57:01,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:57:01,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:57:01,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:57:01,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:57:01,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:57:01,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:57:01,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:57:01,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:57:01,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:57:01,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:57:01,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:57:02,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:57:02,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:57:02,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:57:02,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:57:02,191 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:57:02,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label27.c [2020-10-26 23:57:02,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d97e19f86/7d7511eb8f664988a66ccc8cdac0e24c/FLAGb325dcf3a [2020-10-26 23:57:03,245 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:57:03,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label27.c [2020-10-26 23:57:03,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d97e19f86/7d7511eb8f664988a66ccc8cdac0e24c/FLAGb325dcf3a [2020-10-26 23:57:03,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d97e19f86/7d7511eb8f664988a66ccc8cdac0e24c [2020-10-26 23:57:03,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:57:03,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:57:03,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:57:03,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:57:03,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:57:03,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:03" (1/1) ... [2020-10-26 23:57:03,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bcc7904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:03, skipping insertion in model container [2020-10-26 23:57:03,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:57:03" (1/1) ... [2020-10-26 23:57:03,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:57:03,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:57:04,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:57:04,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:57:04,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:57:04,624 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:57:04,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04 WrapperNode [2020-10-26 23:57:04,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:57:04,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:57:04,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:57:04,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:57:04,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (1/1) ... [2020-10-26 23:57:04,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:57:04,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:57:04,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:57:04,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:57:04,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (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 [2020-10-26 23:57:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:57:04,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:57:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:57:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:57:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:57:04,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:57:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:57:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:57:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:57:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:57:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:57:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:57:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:57:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:57:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:57:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:57:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:57:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:57:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:57:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:57:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:57:08,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:57:08,022 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:57:08,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:08 BoogieIcfgContainer [2020-10-26 23:57:08,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:57:08,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:57:08,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:57:08,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:57:08,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:57:03" (1/3) ... [2020-10-26 23:57:08,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e29f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:08, skipping insertion in model container [2020-10-26 23:57:08,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:57:04" (2/3) ... [2020-10-26 23:57:08,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e29f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:57:08, skipping insertion in model container [2020-10-26 23:57:08,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:57:08" (3/3) ... [2020-10-26 23:57:08,043 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label27.c [2020-10-26 23:57:08,060 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:57:08,068 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:57:08,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:57:08,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:57:08,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:57:08,145 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:57:08,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:57:08,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:57:08,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:57:08,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:57:08,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:57:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:57:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 23:57:08,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:08,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:08,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:08,217 INFO L82 PathProgramCache]: Analyzing trace with hash -882991196, now seen corresponding path program 1 times [2020-10-26 23:57:08,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:08,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368224485] [2020-10-26 23:57:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:08,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:08,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 23:57:08,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:08,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-26 23:57:08,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 23:57:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:57:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:09,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:09,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:09,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:57:09,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:57:09,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368224485] [2020-10-26 23:57:09,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:57:09,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:57:09,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723474433] [2020-10-26 23:57:09,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:57:09,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:09,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:57:09,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:57:09,195 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:57:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:14,236 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-26 23:57:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:57:14,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-26 23:57:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:14,273 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:57:14,274 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:57:14,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:57:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:57:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-26 23:57:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-26 23:57:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-26 23:57:14,455 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 19 [2020-10-26 23:57:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:14,456 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-26 23:57:14,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:57:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-26 23:57:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 23:57:14,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:14,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:14,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:57:14,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1755422107, now seen corresponding path program 1 times [2020-10-26 23:57:14,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:14,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243576174] [2020-10-26 23:57:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:57:15,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-26 23:57:15,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:57:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:57:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:15,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:57:15,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:15,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:15,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:57:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:57:16,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:57:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:57:16,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243576174] [2020-10-26 23:57:16,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:57:16,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:57:16,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661292697] [2020-10-26 23:57:16,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:16,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:16,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:16,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:16,194 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-26 23:57:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:21,923 INFO L93 Difference]: Finished difference Result 2092 states and 3103 transitions. [2020-10-26 23:57:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:21,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-26 23:57:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:21,934 INFO L225 Difference]: With dead ends: 2092 [2020-10-26 23:57:21,934 INFO L226 Difference]: Without dead ends: 1405 [2020-10-26 23:57:21,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-10-26 23:57:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1384. [2020-10-26 23:57:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-26 23:57:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1819 transitions. [2020-10-26 23:57:22,006 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1819 transitions. Word has length 95 [2020-10-26 23:57:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:22,007 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1819 transitions. [2020-10-26 23:57:22,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1819 transitions. [2020-10-26 23:57:22,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-26 23:57:22,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:22,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:22,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:57:22,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:22,014 INFO L82 PathProgramCache]: Analyzing trace with hash -714646826, now seen corresponding path program 1 times [2020-10-26 23:57:22,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:22,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900199158] [2020-10-26 23:57:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:25,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:57:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3777 [2020-10-26 23:57:25,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:57:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-26 23:57:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:57:26,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:26,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:57:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:57:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:57:26,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 23:57:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:57:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:57:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,977 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-26 23:57:27,138 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-26 23:57:27,270 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-26 23:57:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:57:27,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900199158] [2020-10-26 23:57:27,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:27,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:57:27,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686070138] [2020-10-26 23:57:27,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:57:27,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:27,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:57:27,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:27,541 INFO L87 Difference]: Start difference. First operand 1384 states and 1819 transitions. Second operand 12 states. [2020-10-26 23:57:27,773 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-10-26 23:57:28,327 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-10-26 23:57:30,886 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-26 23:57:31,359 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-10-26 23:57:31,574 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-26 23:57:31,988 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-26 23:57:32,478 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2020-10-26 23:57:34,595 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-10-26 23:57:35,216 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-10-26 23:57:35,722 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2020-10-26 23:57:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:38,392 INFO L93 Difference]: Finished difference Result 3900 states and 5299 transitions. [2020-10-26 23:57:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:57:38,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2020-10-26 23:57:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:38,422 INFO L225 Difference]: With dead ends: 3900 [2020-10-26 23:57:38,422 INFO L226 Difference]: Without dead ends: 2522 [2020-10-26 23:57:38,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2020-10-26 23:57:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2020-10-26 23:57:38,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2437. [2020-10-26 23:57:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-10-26 23:57:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3234 transitions. [2020-10-26 23:57:38,565 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3234 transitions. Word has length 182 [2020-10-26 23:57:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:38,568 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 3234 transitions. [2020-10-26 23:57:38,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:57:38,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3234 transitions. [2020-10-26 23:57:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-26 23:57:38,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:38,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:38,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:57:38,584 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:38,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1065238789, now seen corresponding path program 1 times [2020-10-26 23:57:38,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:38,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708365197] [2020-10-26 23:57:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-26 23:57:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-26 23:57:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:57:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:57:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 23:57:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:41,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:57:41,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:57:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:41,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 23:57:41,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:57:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:57:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-26 23:57:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:57:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:57:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:42,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:57:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:57:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-26 23:57:42,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708365197] [2020-10-26 23:57:42,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:42,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:42,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158799829] [2020-10-26 23:57:42,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:42,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:42,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:42,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:42,455 INFO L87 Difference]: Start difference. First operand 2437 states and 3234 transitions. Second operand 8 states. [2020-10-26 23:57:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:48,418 INFO L93 Difference]: Finished difference Result 5607 states and 7827 transitions. [2020-10-26 23:57:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:48,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 352 [2020-10-26 23:57:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:48,439 INFO L225 Difference]: With dead ends: 5607 [2020-10-26 23:57:48,440 INFO L226 Difference]: Without dead ends: 3176 [2020-10-26 23:57:48,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:57:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2020-10-26 23:57:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 3145. [2020-10-26 23:57:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2020-10-26 23:57:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 4225 transitions. [2020-10-26 23:57:48,550 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 4225 transitions. Word has length 352 [2020-10-26 23:57:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:48,552 INFO L481 AbstractCegarLoop]: Abstraction has 3145 states and 4225 transitions. [2020-10-26 23:57:48,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 4225 transitions. [2020-10-26 23:57:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-26 23:57:48,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:48,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:48,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:57:48,565 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -5671380, now seen corresponding path program 1 times [2020-10-26 23:57:48,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:48,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175831339] [2020-10-26 23:57:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-26 23:57:53,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:53,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 23:57:53,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:53,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:57:53,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 23:57:53,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:53,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:53,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:57:53,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:57:53,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:57:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:53,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:57:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:57:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:57:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:57:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-26 23:57:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:54,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:57:54,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:57:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:57:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 140 proven. 218 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 23:57:54,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175831339] [2020-10-26 23:57:54,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:54,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:54,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192231212] [2020-10-26 23:57:54,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:54,689 INFO L87 Difference]: Start difference. First operand 3145 states and 4225 transitions. Second operand 7 states. [2020-10-26 23:58:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:00,816 INFO L93 Difference]: Finished difference Result 7724 states and 10509 transitions. [2020-10-26 23:58:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:00,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 467 [2020-10-26 23:58:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:00,842 INFO L225 Difference]: With dead ends: 7724 [2020-10-26 23:58:00,842 INFO L226 Difference]: Without dead ends: 3849 [2020-10-26 23:58:00,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-10-26 23:58:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3827. [2020-10-26 23:58:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3827 states. [2020-10-26 23:58:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 4320 transitions. [2020-10-26 23:58:00,984 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 4320 transitions. Word has length 467 [2020-10-26 23:58:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:00,984 INFO L481 AbstractCegarLoop]: Abstraction has 3827 states and 4320 transitions. [2020-10-26 23:58:00,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 4320 transitions. [2020-10-26 23:58:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-26 23:58:01,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:01,006 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:01,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:58:01,007 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash -188074237, now seen corresponding path program 1 times [2020-10-26 23:58:01,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:01,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005682156] [2020-10-26 23:58:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:01,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:01,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 600 [2020-10-26 23:58:06,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:58:06,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:58:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:58:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:06,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:58:06,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:58:06,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:58:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:58:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:06,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:06,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:58:06,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:58:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:58:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:06,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:06,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:58:06,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:58:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:06,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:58:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-26 23:58:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:06,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:06,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:58:06,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:58:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:58:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 55 proven. 380 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-26 23:58:07,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005682156] [2020-10-26 23:58:07,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:07,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:07,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462601912] [2020-10-26 23:58:07,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:07,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:07,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:07,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:07,316 INFO L87 Difference]: Start difference. First operand 3827 states and 4320 transitions. Second operand 7 states. [2020-10-26 23:58:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:11,626 INFO L93 Difference]: Finished difference Result 11444 states and 13171 transitions. [2020-10-26 23:58:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:11,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 580 [2020-10-26 23:58:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:11,673 INFO L225 Difference]: With dead ends: 11444 [2020-10-26 23:58:11,673 INFO L226 Difference]: Without dead ends: 7623 [2020-10-26 23:58:11,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7623 states. [2020-10-26 23:58:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7623 to 7605. [2020-10-26 23:58:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7605 states. [2020-10-26 23:58:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 8644 transitions. [2020-10-26 23:58:11,909 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 8644 transitions. Word has length 580 [2020-10-26 23:58:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:11,909 INFO L481 AbstractCegarLoop]: Abstraction has 7605 states and 8644 transitions. [2020-10-26 23:58:11,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 8644 transitions. [2020-10-26 23:58:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-26 23:58:11,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:11,935 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:11,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:58:11,935 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:11,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1016025734, now seen corresponding path program 1 times [2020-10-26 23:58:11,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:11,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445865299] [2020-10-26 23:58:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 649 [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:58:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:17,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:58:17,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:58:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:18,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:18,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:58:18,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-26 23:58:18,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:58:18,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:58:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:58:19,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:58:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:19,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:19,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:19,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:58:19,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-26 23:58:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:19,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:19,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:19,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:58:19,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 44 proven. 348 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-26 23:58:20,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445865299] [2020-10-26 23:58:20,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:20,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:20,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894411814] [2020-10-26 23:58:20,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:20,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:20,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:20,730 INFO L87 Difference]: Start difference. First operand 7605 states and 8644 transitions. Second operand 8 states. [2020-10-26 23:58:20,964 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-26 23:58:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:24,808 INFO L93 Difference]: Finished difference Result 14964 states and 17488 transitions. [2020-10-26 23:58:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:24,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 631 [2020-10-26 23:58:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:24,858 INFO L225 Difference]: With dead ends: 14964 [2020-10-26 23:58:24,858 INFO L226 Difference]: Without dead ends: 7702 [2020-10-26 23:58:24,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7702 states. [2020-10-26 23:58:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7702 to 7605. [2020-10-26 23:58:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7605 states. [2020-10-26 23:58:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 8642 transitions. [2020-10-26 23:58:25,183 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 8642 transitions. Word has length 631 [2020-10-26 23:58:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:25,184 INFO L481 AbstractCegarLoop]: Abstraction has 7605 states and 8642 transitions. [2020-10-26 23:58:25,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:58:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 8642 transitions. [2020-10-26 23:58:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2020-10-26 23:58:25,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:25,216 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:25,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:58:25,217 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2047418741, now seen corresponding path program 1 times [2020-10-26 23:58:25,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:25,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048071023] [2020-10-26 23:58:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:30,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 770 [2020-10-26 23:58:30,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:58:30,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:58:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:30,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:30,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:58:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:30,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:30,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:58:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:58:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:31,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:58:31,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:31,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:31,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:31,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:58:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:58:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:58:31,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:58:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 193 proven. 347 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2020-10-26 23:58:31,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048071023] [2020-10-26 23:58:31,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:31,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:31,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375996643] [2020-10-26 23:58:31,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:31,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:31,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:31,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:31,985 INFO L87 Difference]: Start difference. First operand 7605 states and 8642 transitions. Second operand 7 states. [2020-10-26 23:58:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:36,274 INFO L93 Difference]: Finished difference Result 18267 states and 20983 transitions. [2020-10-26 23:58:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:58:36,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 750 [2020-10-26 23:58:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:36,310 INFO L225 Difference]: With dead ends: 18267 [2020-10-26 23:58:36,310 INFO L226 Difference]: Without dead ends: 11005 [2020-10-26 23:58:36,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:58:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11005 states. [2020-10-26 23:58:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11005 to 10995. [2020-10-26 23:58:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10995 states. [2020-10-26 23:58:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10995 states to 10995 states and 12232 transitions. [2020-10-26 23:58:36,586 INFO L78 Accepts]: Start accepts. Automaton has 10995 states and 12232 transitions. Word has length 750 [2020-10-26 23:58:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:36,587 INFO L481 AbstractCegarLoop]: Abstraction has 10995 states and 12232 transitions. [2020-10-26 23:58:36,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 10995 states and 12232 transitions. [2020-10-26 23:58:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2020-10-26 23:58:36,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:36,607 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:36,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:58:36,607 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:36,608 INFO L82 PathProgramCache]: Analyzing trace with hash -613352052, now seen corresponding path program 1 times [2020-10-26 23:58:36,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:36,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213458225] [2020-10-26 23:58:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:41,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 880 [2020-10-26 23:58:41,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:58:41,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:58:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:58:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:41,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:41,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:41,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:58:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:58:42,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:58:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:58:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:58:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:42,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:58:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:58:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:42,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:42,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:42,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:42,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:42,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:58:42,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:42,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 318 proven. 347 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2020-10-26 23:58:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213458225] [2020-10-26 23:58:43,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:43,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:43,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783657622] [2020-10-26 23:58:43,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:43,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:43,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:43,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:43,390 INFO L87 Difference]: Start difference. First operand 10995 states and 12232 transitions. Second operand 7 states. [2020-10-26 23:58:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:47,657 INFO L93 Difference]: Finished difference Result 25040 states and 29858 transitions. [2020-10-26 23:58:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:58:47,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 858 [2020-10-26 23:58:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:47,724 INFO L225 Difference]: With dead ends: 25040 [2020-10-26 23:58:47,724 INFO L226 Difference]: Without dead ends: 14388 [2020-10-26 23:58:47,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:58:47,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14388 states. [2020-10-26 23:58:48,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14388 to 14038. [2020-10-26 23:58:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14038 states. [2020-10-26 23:58:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14038 states to 14038 states and 15454 transitions. [2020-10-26 23:58:48,217 INFO L78 Accepts]: Start accepts. Automaton has 14038 states and 15454 transitions. Word has length 858 [2020-10-26 23:58:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:48,218 INFO L481 AbstractCegarLoop]: Abstraction has 14038 states and 15454 transitions. [2020-10-26 23:58:48,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 14038 states and 15454 transitions. [2020-10-26 23:58:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-26 23:58:48,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:48,247 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:48,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:58:48,248 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash 295171400, now seen corresponding path program 1 times [2020-10-26 23:58:48,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:48,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598322624] [2020-10-26 23:58:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:53,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:58:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:53,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:53,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:53,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:58:53,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:53,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:58:53,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:58:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:54,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:58:54,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-26 23:58:54,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:58:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:58:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:55,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-26 23:58:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2020-10-26 23:58:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 828 [2020-10-26 23:58:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:55,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:55,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:55,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:58:55,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:58:55,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:58:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 83 proven. 886 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2020-10-26 23:58:56,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598322624] [2020-10-26 23:58:56,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:56,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:58:56,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63655470] [2020-10-26 23:58:56,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:58:56,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:56,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:58:56,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:58:56,871 INFO L87 Difference]: Start difference. First operand 14038 states and 15454 transitions. Second operand 8 states. [2020-10-26 23:59:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:02,405 INFO L93 Difference]: Finished difference Result 31460 states and 34975 transitions. [2020-10-26 23:59:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:59:02,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 977 [2020-10-26 23:59:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:02,463 INFO L225 Difference]: With dead ends: 31460 [2020-10-26 23:59:02,463 INFO L226 Difference]: Without dead ends: 17765 [2020-10-26 23:59:02,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:59:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17765 states. [2020-10-26 23:59:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17765 to 16074. [2020-10-26 23:59:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16074 states. [2020-10-26 23:59:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 17629 transitions. [2020-10-26 23:59:03,004 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 17629 transitions. Word has length 977 [2020-10-26 23:59:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:03,005 INFO L481 AbstractCegarLoop]: Abstraction has 16074 states and 17629 transitions. [2020-10-26 23:59:03,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:59:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 17629 transitions. [2020-10-26 23:59:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-26 23:59:03,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:03,034 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:03,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:59:03,034 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:03,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1045264584, now seen corresponding path program 1 times [2020-10-26 23:59:03,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:03,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908247049] [2020-10-26 23:59:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:59:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:59:08,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:59:08,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:59:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:59:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:59:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-26 23:59:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:59:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-26 23:59:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:09,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:59:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 887 [2020-10-26 23:59:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 415 proven. 385 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2020-10-26 23:59:09,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908247049] [2020-10-26 23:59:09,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:09,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:09,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758917702] [2020-10-26 23:59:09,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:09,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:09,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:09,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:09,944 INFO L87 Difference]: Start difference. First operand 16074 states and 17629 transitions. Second operand 7 states. [2020-10-26 23:59:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:14,529 INFO L93 Difference]: Finished difference Result 34198 states and 37610 transitions. [2020-10-26 23:59:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:59:14,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1036 [2020-10-26 23:59:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:14,583 INFO L225 Difference]: With dead ends: 34198 [2020-10-26 23:59:14,583 INFO L226 Difference]: Without dead ends: 18467 [2020-10-26 23:59:14,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:59:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18467 states. [2020-10-26 23:59:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18467 to 18454. [2020-10-26 23:59:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18454 states. [2020-10-26 23:59:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 20190 transitions. [2020-10-26 23:59:14,971 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 20190 transitions. Word has length 1036 [2020-10-26 23:59:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:14,972 INFO L481 AbstractCegarLoop]: Abstraction has 18454 states and 20190 transitions. [2020-10-26 23:59:14,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 20190 transitions. [2020-10-26 23:59:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-26 23:59:15,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:15,004 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:15,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:59:15,005 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash -89189516, now seen corresponding path program 1 times [2020-10-26 23:59:15,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:15,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483059755] [2020-10-26 23:59:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:15,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:17,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:18,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-26 23:59:20,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-26 23:59:20,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:59:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:59:20,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:59:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:59:20,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:59:20,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:59:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:20,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:20,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:59:20,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:59:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 23:59:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-26 23:59:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:21,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:21,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:59:21,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 889 [2020-10-26 23:59:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 523 proven. 244 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2020-10-26 23:59:21,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483059755] [2020-10-26 23:59:21,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:21,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:21,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396066186] [2020-10-26 23:59:21,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:21,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:21,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:21,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:21,910 INFO L87 Difference]: Start difference. First operand 18454 states and 20190 transitions. Second operand 7 states. [2020-10-26 23:59:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:25,582 INFO L93 Difference]: Finished difference Result 38263 states and 42014 transitions. [2020-10-26 23:59:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:59:25,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1038 [2020-10-26 23:59:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:25,638 INFO L225 Difference]: With dead ends: 38263 [2020-10-26 23:59:25,638 INFO L226 Difference]: Without dead ends: 20152 [2020-10-26 23:59:25,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20152 states. [2020-10-26 23:59:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20152 to 20146. [2020-10-26 23:59:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20146 states. [2020-10-26 23:59:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 22029 transitions. [2020-10-26 23:59:26,060 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 22029 transitions. Word has length 1038 [2020-10-26 23:59:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:26,061 INFO L481 AbstractCegarLoop]: Abstraction has 20146 states and 22029 transitions. [2020-10-26 23:59:26,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 22029 transitions. [2020-10-26 23:59:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2020-10-26 23:59:26,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:26,229 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:26,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:59:26,229 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:26,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1884885998, now seen corresponding path program 1 times [2020-10-26 23:59:26,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:26,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366023111] [2020-10-26 23:59:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:26,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1240 [2020-10-26 23:59:31,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-26 23:59:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:59:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:31,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:59:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:59:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:32,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:59:32,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:59:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:32,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:59:32,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:59:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:59:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-26 23:59:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 955 [2020-10-26 23:59:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2020-10-26 23:59:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:32,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3372 backedges. 385 proven. 554 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2020-10-26 23:59:33,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366023111] [2020-10-26 23:59:33,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:33,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:33,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324702225] [2020-10-26 23:59:33,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:33,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:33,777 INFO L87 Difference]: Start difference. First operand 20146 states and 22029 transitions. Second operand 7 states. [2020-10-26 23:59:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:38,271 INFO L93 Difference]: Finished difference Result 40288 states and 44066 transitions. [2020-10-26 23:59:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:59:38,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1214 [2020-10-26 23:59:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:38,322 INFO L225 Difference]: With dead ends: 40288 [2020-10-26 23:59:38,322 INFO L226 Difference]: Without dead ends: 20485 [2020-10-26 23:59:38,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:59:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20485 states. [2020-10-26 23:59:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20485 to 20483. [2020-10-26 23:59:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20483 states. [2020-10-26 23:59:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20483 states to 20483 states and 22368 transitions. [2020-10-26 23:59:38,736 INFO L78 Accepts]: Start accepts. Automaton has 20483 states and 22368 transitions. Word has length 1214 [2020-10-26 23:59:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:38,737 INFO L481 AbstractCegarLoop]: Abstraction has 20483 states and 22368 transitions. [2020-10-26 23:59:38,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 20483 states and 22368 transitions. [2020-10-26 23:59:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2020-10-26 23:59:38,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:38,772 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:38,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:59:38,772 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:38,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1364862678, now seen corresponding path program 1 times [2020-10-26 23:59:38,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:38,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646228692] [2020-10-26 23:59:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:39,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:43,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:43,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1242 [2020-10-26 23:59:43,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:59:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-26 23:59:43,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:59:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:59:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:59:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:59:44,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:59:44,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:59:44,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:59:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:59:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:59:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:44,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:59:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:45,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:59:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 815 [2020-10-26 23:59:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:59:45,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:59:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 957 [2020-10-26 23:59:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-26 23:59:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3374 backedges. 385 proven. 554 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2020-10-26 23:59:46,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646228692] [2020-10-26 23:59:46,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:59:46,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:59:46,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115399429] [2020-10-26 23:59:46,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:59:46,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:59:46,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:59:46,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:59:46,145 INFO L87 Difference]: Start difference. First operand 20483 states and 22368 transitions. Second operand 7 states. [2020-10-26 23:59:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:59:52,669 INFO L93 Difference]: Finished difference Result 44342 states and 48624 transitions. [2020-10-26 23:59:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:59:52,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1216 [2020-10-26 23:59:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:59:52,722 INFO L225 Difference]: With dead ends: 44342 [2020-10-26 23:59:52,722 INFO L226 Difference]: Without dead ends: 24202 [2020-10-26 23:59:52,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:59:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24202 states. [2020-10-26 23:59:53,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24202 to 23863. [2020-10-26 23:59:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23863 states. [2020-10-26 23:59:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23863 states to 23863 states and 25944 transitions. [2020-10-26 23:59:53,209 INFO L78 Accepts]: Start accepts. Automaton has 23863 states and 25944 transitions. Word has length 1216 [2020-10-26 23:59:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:59:53,210 INFO L481 AbstractCegarLoop]: Abstraction has 23863 states and 25944 transitions. [2020-10-26 23:59:53,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:59:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 23863 states and 25944 transitions. [2020-10-26 23:59:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1262 [2020-10-26 23:59:53,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:59:53,248 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:59:53,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:59:53,248 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:59:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:59:53,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1614765183, now seen corresponding path program 1 times [2020-10-26 23:59:53,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:59:53,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512377291] [2020-10-26 23:59:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:59:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1289 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:59:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:59:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:59:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:59:58,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:59:58,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:59:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:59:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:59:58,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:58,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:59:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:58,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:58,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:59:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:59:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:59:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:59:59,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:59:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:59:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:59:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:59:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 23:59:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 860 [2020-10-26 23:59:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1002 [2020-10-26 23:59:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:59:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-26 23:59:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:59:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:59:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:59:59,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 23:59:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:59:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:59:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:59:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:59:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 23:59:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:59:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4092 backedges. 751 proven. 383 refuted. 0 times theorem prover too weak. 2958 trivial. 0 not checked. [2020-10-27 00:00:00,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512377291] [2020-10-27 00:00:00,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:00,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:00,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572069718] [2020-10-27 00:00:00,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:00,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:00,354 INFO L87 Difference]: Start difference. First operand 23863 states and 25944 transitions. Second operand 7 states. [2020-10-27 00:00:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:05,108 INFO L93 Difference]: Finished difference Result 48398 states and 52731 transitions. [2020-10-27 00:00:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:00:05,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1261 [2020-10-27 00:00:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:05,167 INFO L225 Difference]: With dead ends: 48398 [2020-10-27 00:00:05,167 INFO L226 Difference]: Without dead ends: 25219 [2020-10-27 00:00:05,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25219 states. [2020-10-27 00:00:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25219 to 24539. [2020-10-27 00:00:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24539 states. [2020-10-27 00:00:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24539 states to 24539 states and 26236 transitions. [2020-10-27 00:00:05,624 INFO L78 Accepts]: Start accepts. Automaton has 24539 states and 26236 transitions. Word has length 1261 [2020-10-27 00:00:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:05,625 INFO L481 AbstractCegarLoop]: Abstraction has 24539 states and 26236 transitions. [2020-10-27 00:00:05,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 24539 states and 26236 transitions. [2020-10-27 00:00:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1264 [2020-10-27 00:00:05,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:05,659 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:05,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:00:05,660 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:05,661 INFO L82 PathProgramCache]: Analyzing trace with hash 323424435, now seen corresponding path program 1 times [2020-10-27 00:00:05,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:05,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136491013] [2020-10-27 00:00:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:09,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:10,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1287 [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:00:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:11,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:00:11,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:00:11,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:00:11,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:00:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:00:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:00:11,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:00:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:00:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:00:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:00:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:00:11,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:00:11,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:11,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:11,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:00:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:00:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:00:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:13,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:00:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2997 backedges. 935 proven. 137 refuted. 0 times theorem prover too weak. 1925 trivial. 0 not checked. [2020-10-27 00:00:14,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136491013] [2020-10-27 00:00:14,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:14,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:00:14,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840171300] [2020-10-27 00:00:14,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:14,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:14,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:14,983 INFO L87 Difference]: Start difference. First operand 24539 states and 26236 transitions. Second operand 7 states. [2020-10-27 00:00:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:19,340 INFO L93 Difference]: Finished difference Result 48398 states and 51784 transitions. [2020-10-27 00:00:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:00:19,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1263 [2020-10-27 00:00:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:19,387 INFO L225 Difference]: With dead ends: 48398 [2020-10-27 00:00:19,387 INFO L226 Difference]: Without dead ends: 24543 [2020-10-27 00:00:19,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:00:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-10-27 00:00:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 24202. [2020-10-27 00:00:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24202 states. [2020-10-27 00:00:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24202 states to 24202 states and 25877 transitions. [2020-10-27 00:00:19,843 INFO L78 Accepts]: Start accepts. Automaton has 24202 states and 25877 transitions. Word has length 1263 [2020-10-27 00:00:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:19,844 INFO L481 AbstractCegarLoop]: Abstraction has 24202 states and 25877 transitions. [2020-10-27 00:00:19,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 24202 states and 25877 transitions. [2020-10-27 00:00:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2020-10-27 00:00:19,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:19,878 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:19,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:00:19,879 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:19,879 INFO L82 PathProgramCache]: Analyzing trace with hash 319355954, now seen corresponding path program 1 times [2020-10-27 00:00:19,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:19,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632758421] [2020-10-27 00:00:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking...