/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=DEEPEST --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:34:30,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:34:30,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:34:30,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:34:30,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:34:30,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:34:30,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:34:30,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:34:30,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:34:30,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:34:30,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:34:30,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:34:30,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:34:30,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:34:30,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:34:30,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:34:30,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:34:30,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:34:30,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:34:30,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:34:30,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:34:30,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:34:30,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:34:30,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:34:30,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:34:30,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:34:30,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:34:30,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:34:30,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:34:30,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:34:30,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:34:30,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:34:30,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:34:30,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:34:30,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:34:30,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:34:30,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:34:30,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:34:30,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:34:30,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:34:30,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:34:30,704 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 [2020-10-27 18:34:30,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:34:30,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:34:30,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:34:30,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:34:30,767 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:34:30,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:34:30,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:34:30,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:34:30,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:34:30,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:34:30,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:34:30,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:34:30,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:34:30,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:34:30,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:34:30,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:34:30,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:34:30,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:34:30,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:34:30,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:34:30,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:34:30,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:34:30,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:34:30,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:34:30,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:34:30,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:34:30,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:34:30,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:34:30,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:34:30,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:34:31,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:34:31,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:34:31,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:34:31,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:34:31,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:34:31,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-27 18:34:31,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d86cd2dfb/cab9bb1f9e404aedba5765b6a27cc147/FLAG877991185 [2020-10-27 18:34:32,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:34:32,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-27 18:34:32,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d86cd2dfb/cab9bb1f9e404aedba5765b6a27cc147/FLAG877991185 [2020-10-27 18:34:32,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d86cd2dfb/cab9bb1f9e404aedba5765b6a27cc147 [2020-10-27 18:34:32,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:34:32,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:34:32,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:34:32,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:34:32,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:34:32,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:34:32" (1/1) ... [2020-10-27 18:34:32,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7709b6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:32, skipping insertion in model container [2020-10-27 18:34:32,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:34:32" (1/1) ... [2020-10-27 18:34:32,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:34:32,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:34:33,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:34:33,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:34:33,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:34:33,638 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:34:33,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33 WrapperNode [2020-10-27 18:34:33,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:34:33,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:34:33,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:34:33,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:34:33,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... [2020-10-27 18:34:33,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:34:33,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:34:33,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:34:33,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:34:33,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:34:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:34:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:34:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:34:33,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:34:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:34:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:34:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:34:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:34:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:34:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:34:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:34:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:34:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:34:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:34:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:34:33,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:34:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:34:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:34:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:34:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:34:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:34:36,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:34:36,624 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:34:36,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:34:36 BoogieIcfgContainer [2020-10-27 18:34:36,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:34:36,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:34:36,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:34:36,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:34:36,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:34:32" (1/3) ... [2020-10-27 18:34:36,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7098471d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:34:36, skipping insertion in model container [2020-10-27 18:34:36,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:34:33" (2/3) ... [2020-10-27 18:34:36,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7098471d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:34:36, skipping insertion in model container [2020-10-27 18:34:36,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:34:36" (3/3) ... [2020-10-27 18:34:36,638 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2020-10-27 18:34:36,651 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:34:36,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:34:36,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:34:36,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:34:36,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:34:36,708 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:34:36,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:34:36,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:34:36,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:34:36,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:34:36,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:34:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:34:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 18:34:36,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:36,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:34:36,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:36,755 INFO L82 PathProgramCache]: Analyzing trace with hash -104759924, now seen corresponding path program 1 times [2020-10-27 18:34:36,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:36,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874203449] [2020-10-27 18:34:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:37,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 18:34:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-27 18:34:37,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:34:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:34:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 18:34:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:34:37,619 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:34:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:37,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:37,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:37,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:34:37,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:34:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:37,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874203449] [2020-10-27 18:34:37,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:34:37,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:34:37,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080451581] [2020-10-27 18:34:37,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:34:37,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:37,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:34:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:34:37,718 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:34:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:42,784 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-27 18:34:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:42,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-27 18:34:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:42,823 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:34:42,824 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:34:42,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:34:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:34:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:34:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-27 18:34:42,978 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 13 [2020-10-27 18:34:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:42,978 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-27 18:34:42,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:34:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-27 18:34:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 18:34:42,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:42,984 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:34:42,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:34:42,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:42,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1104471301, now seen corresponding path program 1 times [2020-10-27 18:34:42,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:42,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564007907] [2020-10-27 18:34:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:44,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:44,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:34:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:34:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-27 18:34:44,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:34:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:34:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:34:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:44,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:44,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:44,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:44,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:34:44,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:44,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:44,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:34:44,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 18:34:44,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:34:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:34:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:34:44,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564007907] [2020-10-27 18:34:44,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:44,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:44,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755245387] [2020-10-27 18:34:44,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:44,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:44,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:44,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:44,471 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 5 states. [2020-10-27 18:34:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:49,289 INFO L93 Difference]: Finished difference Result 2065 states and 3256 transitions. [2020-10-27 18:34:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:49,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-27 18:34:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:49,300 INFO L225 Difference]: With dead ends: 2065 [2020-10-27 18:34:49,300 INFO L226 Difference]: Without dead ends: 1381 [2020-10-27 18:34:49,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:34:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-27 18:34:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1377. [2020-10-27 18:34:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-27 18:34:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1889 transitions. [2020-10-27 18:34:49,365 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1889 transitions. Word has length 88 [2020-10-27 18:34:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:49,366 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1889 transitions. [2020-10-27 18:34:49,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:34:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1889 transitions. [2020-10-27 18:34:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 18:34:49,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:49,374 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 18:34:49,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:34:49,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash 446743102, now seen corresponding path program 1 times [2020-10-27 18:34:49,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:49,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772189370] [2020-10-27 18:34:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:52,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:52,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 18:34:52,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:34:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3417 [2020-10-27 18:34:52,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:34:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:34:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:34:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:34:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:52,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:52,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:34:52,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:34:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:34:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:53,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:34:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:34:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:34:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:53,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:34:53,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:34:53,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:34:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 18:34:53,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:34:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:34:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 18:34:53,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772189370] [2020-10-27 18:34:53,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:34:53,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:34:53,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813109502] [2020-10-27 18:34:53,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:34:53,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:34:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:34:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:34:53,251 INFO L87 Difference]: Start difference. First operand 1377 states and 1889 transitions. Second operand 5 states. [2020-10-27 18:34:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:58,261 INFO L93 Difference]: Finished difference Result 3436 states and 4843 transitions. [2020-10-27 18:34:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:34:58,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-27 18:34:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:58,280 INFO L225 Difference]: With dead ends: 3436 [2020-10-27 18:34:58,280 INFO L226 Difference]: Without dead ends: 2065 [2020-10-27 18:34:58,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:34:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-10-27 18:34:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2061. [2020-10-27 18:34:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:34:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2640 transitions. [2020-10-27 18:34:58,353 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2640 transitions. Word has length 176 [2020-10-27 18:34:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:58,354 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2640 transitions. [2020-10-27 18:34:58,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:34:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2640 transitions. [2020-10-27 18:34:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-27 18:34:58,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:58,359 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:34:58,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:34:58,360 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1873192156, now seen corresponding path program 1 times [2020-10-27 18:34:58,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:58,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484889878] [2020-10-27 18:34:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:00,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:00,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:35:00,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:35:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2329 [2020-10-27 18:35:00,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:35:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:35:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:00,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:00,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:00,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:35:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:00,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:00,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:00,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:35:00,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:00,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:01,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:01,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:35:01,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:35:01,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:35:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:35:01,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484889878] [2020-10-27 18:35:01,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:01,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:35:01,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458771238] [2020-10-27 18:35:01,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:35:01,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:01,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:35:01,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:35:01,092 INFO L87 Difference]: Start difference. First operand 2061 states and 2640 transitions. Second operand 6 states. [2020-10-27 18:35:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:06,217 INFO L93 Difference]: Finished difference Result 5482 states and 7113 transitions. [2020-10-27 18:35:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:35:06,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-10-27 18:35:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:06,240 INFO L225 Difference]: With dead ends: 5482 [2020-10-27 18:35:06,241 INFO L226 Difference]: Without dead ends: 3427 [2020-10-27 18:35:06,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:35:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2020-10-27 18:35:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2746. [2020-10-27 18:35:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2746 states. [2020-10-27 18:35:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3554 transitions. [2020-10-27 18:35:06,346 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3554 transitions. Word has length 187 [2020-10-27 18:35:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:06,347 INFO L481 AbstractCegarLoop]: Abstraction has 2746 states and 3554 transitions. [2020-10-27 18:35:06,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:35:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3554 transitions. [2020-10-27 18:35:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-27 18:35:06,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:06,351 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 18:35:06,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:35:06,352 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:06,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1734156300, now seen corresponding path program 1 times [2020-10-27 18:35:06,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:06,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557191296] [2020-10-27 18:35:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 18:35:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:35:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-27 18:35:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-27 18:35:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:35:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:08,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:08,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:08,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:08,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:35:08,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:08,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:08,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:08,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:08,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:35:08,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:08,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:08,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 18:35:08,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 18:35:08,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:35:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:35:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557191296] [2020-10-27 18:35:08,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:08,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:35:08,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743095959] [2020-10-27 18:35:08,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:35:08,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:35:08,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:35:08,884 INFO L87 Difference]: Start difference. First operand 2746 states and 3554 transitions. Second operand 5 states. [2020-10-27 18:35:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:13,976 INFO L93 Difference]: Finished difference Result 6855 states and 9132 transitions. [2020-10-27 18:35:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:35:13,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-27 18:35:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:14,005 INFO L225 Difference]: With dead ends: 6855 [2020-10-27 18:35:14,005 INFO L226 Difference]: Without dead ends: 4115 [2020-10-27 18:35:14,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:35:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2020-10-27 18:35:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 4111. [2020-10-27 18:35:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4111 states. [2020-10-27 18:35:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 5399 transitions. [2020-10-27 18:35:14,175 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 5399 transitions. Word has length 211 [2020-10-27 18:35:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:14,176 INFO L481 AbstractCegarLoop]: Abstraction has 4111 states and 5399 transitions. [2020-10-27 18:35:14,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:35:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 5399 transitions. [2020-10-27 18:35:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-27 18:35:14,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:14,182 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:35:14,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:35:14,182 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1924970539, now seen corresponding path program 1 times [2020-10-27 18:35:14,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:14,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515388012] [2020-10-27 18:35:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:14,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:19,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-27 18:35:19,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:35:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 18:35:19,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:35:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:35:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 18:35:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:35:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:19,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:19,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:35:19,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:19,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:19,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:19,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:19,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:35:19,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:35:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:19,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:19,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:35:19,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:35:19,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:35:19,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:35:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:35:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:20,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:20,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:35:20,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:20,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 18:35:20,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:35:20,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:35:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 18:35:20,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515388012] [2020-10-27 18:35:20,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:20,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:35:20,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039165583] [2020-10-27 18:35:20,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:35:20,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:35:20,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:35:20,234 INFO L87 Difference]: Start difference. First operand 4111 states and 5399 transitions. Second operand 7 states. [2020-10-27 18:35:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:28,337 INFO L93 Difference]: Finished difference Result 10656 states and 13965 transitions. [2020-10-27 18:35:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:35:28,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-27 18:35:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:28,382 INFO L225 Difference]: With dead ends: 10656 [2020-10-27 18:35:28,382 INFO L226 Difference]: Without dead ends: 6208 [2020-10-27 18:35:28,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:35:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2020-10-27 18:35:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 6204. [2020-10-27 18:35:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6204 states. [2020-10-27 18:35:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 8112 transitions. [2020-10-27 18:35:28,657 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 8112 transitions. Word has length 263 [2020-10-27 18:35:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:28,658 INFO L481 AbstractCegarLoop]: Abstraction has 6204 states and 8112 transitions. [2020-10-27 18:35:28,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:35:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 8112 transitions. [2020-10-27 18:35:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-27 18:35:28,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:28,665 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:35:28,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:35:28,666 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:28,666 INFO L82 PathProgramCache]: Analyzing trace with hash 243315661, now seen corresponding path program 1 times [2020-10-27 18:35:28,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:28,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797279367] [2020-10-27 18:35:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:33,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:33,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-27 18:35:33,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:35:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:35:33,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:35:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:35:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:35:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:33,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:33,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:35:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:33,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:33,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:33,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:33,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:35:33,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:34,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:34,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:35:34,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:35:34,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:35:34,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:35:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:34,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:34,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:35:34,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:35:34,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 18:35:34,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:35:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:35:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 176 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 18:35:34,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797279367] [2020-10-27 18:35:34,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:34,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:35:34,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053285611] [2020-10-27 18:35:34,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:35:34,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:34,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:35:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:35:34,413 INFO L87 Difference]: Start difference. First operand 6204 states and 8112 transitions. Second operand 8 states. [2020-10-27 18:35:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:43,773 INFO L93 Difference]: Finished difference Result 17273 states and 24053 transitions. [2020-10-27 18:35:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 18:35:43,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2020-10-27 18:35:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:43,842 INFO L225 Difference]: With dead ends: 17273 [2020-10-27 18:35:43,842 INFO L226 Difference]: Without dead ends: 11075 [2020-10-27 18:35:43,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:35:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11075 states. [2020-10-27 18:35:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11075 to 11047. [2020-10-27 18:35:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11047 states. [2020-10-27 18:35:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11047 states to 11047 states and 14190 transitions. [2020-10-27 18:35:44,342 INFO L78 Accepts]: Start accepts. Automaton has 11047 states and 14190 transitions. Word has length 274 [2020-10-27 18:35:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:44,343 INFO L481 AbstractCegarLoop]: Abstraction has 11047 states and 14190 transitions. [2020-10-27 18:35:44,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:35:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11047 states and 14190 transitions. [2020-10-27 18:35:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-27 18:35:44,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:44,353 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:44,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:35:44,354 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:44,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1760940862, now seen corresponding path program 1 times [2020-10-27 18:35:44,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:44,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257619399] [2020-10-27 18:35:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:44,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-27 18:35:47,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:35:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2646 [2020-10-27 18:35:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-27 18:35:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:35:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:47,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:35:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:47,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:35:47,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:47,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:47,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:35:47,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:47,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 18:35:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 18:35:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:35:47,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257619399] [2020-10-27 18:35:47,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:47,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:35:47,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847578954] [2020-10-27 18:35:47,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:35:47,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:47,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:35:47,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:35:47,802 INFO L87 Difference]: Start difference. First operand 11047 states and 14190 transitions. Second operand 5 states. [2020-10-27 18:35:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:35:54,629 INFO L93 Difference]: Finished difference Result 27220 states and 35518 transitions. [2020-10-27 18:35:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:35:54,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-27 18:35:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:35:54,711 INFO L225 Difference]: With dead ends: 27220 [2020-10-27 18:35:54,712 INFO L226 Difference]: Without dead ends: 16179 [2020-10-27 18:35:54,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:35:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16179 states. [2020-10-27 18:35:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16179 to 15501. [2020-10-27 18:35:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15501 states. [2020-10-27 18:35:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15501 states to 15501 states and 19682 transitions. [2020-10-27 18:35:55,246 INFO L78 Accepts]: Start accepts. Automaton has 15501 states and 19682 transitions. Word has length 304 [2020-10-27 18:35:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:35:55,247 INFO L481 AbstractCegarLoop]: Abstraction has 15501 states and 19682 transitions. [2020-10-27 18:35:55,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:35:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15501 states and 19682 transitions. [2020-10-27 18:35:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-27 18:35:55,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:35:55,267 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:55,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:35:55,268 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:35:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:35:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1082797116, now seen corresponding path program 1 times [2020-10-27 18:35:55,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:35:55,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428308891] [2020-10-27 18:35:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:35:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:58,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:58,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-27 18:35:58,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:35:58,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-27 18:35:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:35:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-27 18:35:58,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 18:35:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:35:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:58,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:58,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:58,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:35:58,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:35:58,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:35:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:58,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:35:58,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:35:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:35:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:35:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:35:58,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:35:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:35:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:35:58,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:35:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 18:35:58,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:35:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 18:35:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:35:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:35:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:35:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-27 18:35:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:35:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:35:59,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428308891] [2020-10-27 18:35:59,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:35:59,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:35:59,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792824728] [2020-10-27 18:35:59,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:35:59,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:35:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:35:59,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:35:59,371 INFO L87 Difference]: Start difference. First operand 15501 states and 19682 transitions. Second operand 5 states. [2020-10-27 18:36:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:05,717 INFO L93 Difference]: Finished difference Result 38509 states and 49764 transitions. [2020-10-27 18:36:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:36:05,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-27 18:36:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:05,865 INFO L225 Difference]: With dead ends: 38509 [2020-10-27 18:36:05,866 INFO L226 Difference]: Without dead ends: 23014 [2020-10-27 18:36:05,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:36:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23014 states. [2020-10-27 18:36:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23014 to 23010. [2020-10-27 18:36:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23010 states. [2020-10-27 18:36:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23010 states to 23010 states and 29402 transitions. [2020-10-27 18:36:06,659 INFO L78 Accepts]: Start accepts. Automaton has 23010 states and 29402 transitions. Word has length 363 [2020-10-27 18:36:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:06,660 INFO L481 AbstractCegarLoop]: Abstraction has 23010 states and 29402 transitions. [2020-10-27 18:36:06,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:36:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23010 states and 29402 transitions. [2020-10-27 18:36:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-27 18:36:06,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:06,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:06,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:36:06,680 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:06,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1338014019, now seen corresponding path program 1 times [2020-10-27 18:36:06,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:06,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633014402] [2020-10-27 18:36:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:11,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:11,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-27 18:36:11,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:36:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:36:11,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-27 18:36:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:36:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:11,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:11,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:11,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:36:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:12,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:12,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:36:12,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:36:12,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:12,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:36:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:12,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:36:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:36:12,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:36:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:36:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:12,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:36:12,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:36:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-10-27 18:36:12,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633014402] [2020-10-27 18:36:12,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:12,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:12,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899628858] [2020-10-27 18:36:12,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:12,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:12,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:12,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:12,583 INFO L87 Difference]: Start difference. First operand 23010 states and 29402 transitions. Second operand 7 states. [2020-10-27 18:36:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:19,954 INFO L93 Difference]: Finished difference Result 45389 states and 58222 transitions. [2020-10-27 18:36:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:36:19,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-27 18:36:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:20,053 INFO L225 Difference]: With dead ends: 45389 [2020-10-27 18:36:20,054 INFO L226 Difference]: Without dead ends: 22385 [2020-10-27 18:36:20,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 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 18:36:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22385 states. [2020-10-27 18:36:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22385 to 20981. [2020-10-27 18:36:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20981 states. [2020-10-27 18:36:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20981 states to 20981 states and 24705 transitions. [2020-10-27 18:36:20,787 INFO L78 Accepts]: Start accepts. Automaton has 20981 states and 24705 transitions. Word has length 379 [2020-10-27 18:36:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:20,788 INFO L481 AbstractCegarLoop]: Abstraction has 20981 states and 24705 transitions. [2020-10-27 18:36:20,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:36:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 20981 states and 24705 transitions. [2020-10-27 18:36:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-27 18:36:20,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:20,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:36:20,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:36:20,815 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1790820625, now seen corresponding path program 1 times [2020-10-27 18:36:20,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:20,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960321317] [2020-10-27 18:36:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 18:36:25,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:36:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 18:36:25,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:36:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:36:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:26,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:26,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:36:26,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:26,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:36:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:26,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:26,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:36:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-27 18:36:26,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:36:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:36:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:26,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:26,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:26,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 18:36:26,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 18:36:26,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:36:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960321317] [2020-10-27 18:36:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:27,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580912254] [2020-10-27 18:36:27,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:27,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:27,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:27,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:27,097 INFO L87 Difference]: Start difference. First operand 20981 states and 24705 transitions. Second operand 7 states. [2020-10-27 18:36:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:33,803 INFO L93 Difference]: Finished difference Result 42034 states and 49674 transitions. [2020-10-27 18:36:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:36:33,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-27 18:36:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:33,883 INFO L225 Difference]: With dead ends: 42034 [2020-10-27 18:36:33,883 INFO L226 Difference]: Without dead ends: 21099 [2020-10-27 18:36:33,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:36:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21099 states. [2020-10-27 18:36:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21099 to 20307. [2020-10-27 18:36:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20307 states. [2020-10-27 18:36:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20307 states to 20307 states and 23253 transitions. [2020-10-27 18:36:34,515 INFO L78 Accepts]: Start accepts. Automaton has 20307 states and 23253 transitions. Word has length 464 [2020-10-27 18:36:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:34,516 INFO L481 AbstractCegarLoop]: Abstraction has 20307 states and 23253 transitions. [2020-10-27 18:36:34,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:36:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 20307 states and 23253 transitions. [2020-10-27 18:36:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-27 18:36:34,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:34,575 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:34,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:36:34,576 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:34,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1164571384, now seen corresponding path program 1 times [2020-10-27 18:36:34,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:34,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350741888] [2020-10-27 18:36:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:35,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:39,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-27 18:36:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:36:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 18:36:39,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:36:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:36:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:39,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:36:39,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:39,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:39,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:36:39,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:36:39,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:39,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:39,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:36:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:40,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:40,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:36:40,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 18:36:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:36:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:36:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:40,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:36:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 18:36:40,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:36:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-27 18:36:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:36:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:36:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 333 proven. 86 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-27 18:36:41,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350741888] [2020-10-27 18:36:41,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:41,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:41,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766222983] [2020-10-27 18:36:41,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:41,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:41,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:41,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:41,686 INFO L87 Difference]: Start difference. First operand 20307 states and 23253 transitions. Second operand 7 states. [2020-10-27 18:36:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:36:49,233 INFO L93 Difference]: Finished difference Result 40593 states and 46440 transitions. [2020-10-27 18:36:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:36:49,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 679 [2020-10-27 18:36:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:36:49,305 INFO L225 Difference]: With dead ends: 40593 [2020-10-27 18:36:49,305 INFO L226 Difference]: Without dead ends: 20332 [2020-10-27 18:36:49,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:36:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20332 states. [2020-10-27 18:36:49,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20332 to 12406. [2020-10-27 18:36:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12406 states. [2020-10-27 18:36:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12406 states to 12406 states and 13956 transitions. [2020-10-27 18:36:49,709 INFO L78 Accepts]: Start accepts. Automaton has 12406 states and 13956 transitions. Word has length 679 [2020-10-27 18:36:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:36:49,710 INFO L481 AbstractCegarLoop]: Abstraction has 12406 states and 13956 transitions. [2020-10-27 18:36:49,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:36:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 12406 states and 13956 transitions. [2020-10-27 18:36:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2020-10-27 18:36:49,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:36:49,736 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-27 18:36:49,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:36:49,737 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:36:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:36:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash 3892779, now seen corresponding path program 1 times [2020-10-27 18:36:49,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:36:49,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402071871] [2020-10-27 18:36:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:36:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:54,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:54,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 724 [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 403 [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:36:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:36:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:36:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:36:55,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:36:55,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:36:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:36:55,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 18:36:55,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:55,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:36:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:36:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-10-27 18:36:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:36:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:36:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-10-27 18:36:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:36:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:36:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:36:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:36:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:36:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:36:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:36:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:36:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:36:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:36:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:36:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 427 proven. 86 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2020-10-27 18:36:56,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402071871] [2020-10-27 18:36:56,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:36:56,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:36:56,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416455433] [2020-10-27 18:36:56,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:36:56,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:36:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:36:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:36:56,646 INFO L87 Difference]: Start difference. First operand 12406 states and 13956 transitions. Second operand 7 states. [2020-10-27 18:37:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:03,155 INFO L93 Difference]: Finished difference Result 24831 states and 27967 transitions. [2020-10-27 18:37:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:37:03,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 704 [2020-10-27 18:37:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:03,191 INFO L225 Difference]: With dead ends: 24831 [2020-10-27 18:37:03,192 INFO L226 Difference]: Without dead ends: 12431 [2020-10-27 18:37:03,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:37:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12431 states. [2020-10-27 18:37:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12431 to 12411. [2020-10-27 18:37:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12411 states. [2020-10-27 18:37:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12411 states to 12411 states and 13932 transitions. [2020-10-27 18:37:03,489 INFO L78 Accepts]: Start accepts. Automaton has 12411 states and 13932 transitions. Word has length 704 [2020-10-27 18:37:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:03,490 INFO L481 AbstractCegarLoop]: Abstraction has 12411 states and 13932 transitions. [2020-10-27 18:37:03,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:37:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 12411 states and 13932 transitions. [2020-10-27 18:37:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-27 18:37:03,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:03,524 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:03,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:37:03,524 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:03,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:03,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1792718742, now seen corresponding path program 1 times [2020-10-27 18:37:03,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:03,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916342990] [2020-10-27 18:37:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:08,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-27 18:37:08,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:37:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:37:08,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:37:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:37:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:08,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:08,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:08,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:08,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:08,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:37:08,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:08,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:08,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:37:08,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:37:09,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 18:37:09,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:09,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:37:09,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:37:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:37:09,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:37:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:37:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-27 18:37:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:37:09,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:37:09,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:09,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:37:09,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:09,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2020-10-27 18:37:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:09,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 912 [2020-10-27 18:37:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:09,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:09,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:09,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:37:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:37:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:37:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 195 proven. 206 refuted. 0 times theorem prover too weak. 1289 trivial. 0 not checked. [2020-10-27 18:37:10,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916342990] [2020-10-27 18:37:10,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:10,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:37:10,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164879198] [2020-10-27 18:37:10,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:37:10,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:37:10,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:37:10,678 INFO L87 Difference]: Start difference. First operand 12411 states and 13932 transitions. Second operand 7 states. [2020-10-27 18:37:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:18,188 INFO L93 Difference]: Finished difference Result 26185 states and 29580 transitions. [2020-10-27 18:37:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:37:18,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1004 [2020-10-27 18:37:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:18,214 INFO L225 Difference]: With dead ends: 26185 [2020-10-27 18:37:18,214 INFO L226 Difference]: Without dead ends: 13780 [2020-10-27 18:37:18,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:37:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13780 states. [2020-10-27 18:37:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13780 to 13768. [2020-10-27 18:37:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13768 states. [2020-10-27 18:37:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13768 states to 13768 states and 15283 transitions. [2020-10-27 18:37:18,481 INFO L78 Accepts]: Start accepts. Automaton has 13768 states and 15283 transitions. Word has length 1004 [2020-10-27 18:37:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:18,482 INFO L481 AbstractCegarLoop]: Abstraction has 13768 states and 15283 transitions. [2020-10-27 18:37:18,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:37:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13768 states and 15283 transitions. [2020-10-27 18:37:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2020-10-27 18:37:18,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:18,517 INFO L422 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:18,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:37:18,518 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash -414955379, now seen corresponding path program 1 times [2020-10-27 18:37:18,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:18,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615875472] [2020-10-27 18:37:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:23,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:23,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1140 [2020-10-27 18:37:23,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:37:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-27 18:37:23,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-27 18:37:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:37:23,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:37:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:23,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:24,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:24,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:24,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:24,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:37:24,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:24,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:24,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:37:24,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:37:24,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:37:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:24,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:24,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:37:24,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-27 18:37:24,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:37:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:24,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:37:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:24,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:24,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:37:24,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:37:24,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:37:24,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:24,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-27 18:37:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-27 18:37:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:37:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:37:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:37:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2020-10-27 18:37:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:25,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 285 proven. 206 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2020-10-27 18:37:26,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615875472] [2020-10-27 18:37:26,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:26,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:37:26,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075228212] [2020-10-27 18:37:26,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:37:26,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:37:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:37:26,131 INFO L87 Difference]: Start difference. First operand 13768 states and 15283 transitions. Second operand 7 states. [2020-10-27 18:37:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:34,032 INFO L93 Difference]: Finished difference Result 28090 states and 31774 transitions. [2020-10-27 18:37:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:37:34,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1116 [2020-10-27 18:37:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:34,097 INFO L225 Difference]: With dead ends: 28090 [2020-10-27 18:37:34,097 INFO L226 Difference]: Without dead ends: 14328 [2020-10-27 18:37:34,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:37:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14328 states. [2020-10-27 18:37:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14328 to 13793. [2020-10-27 18:37:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13793 states. [2020-10-27 18:37:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 15349 transitions. [2020-10-27 18:37:34,497 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 15349 transitions. Word has length 1116 [2020-10-27 18:37:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:34,498 INFO L481 AbstractCegarLoop]: Abstraction has 13793 states and 15349 transitions. [2020-10-27 18:37:34,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:37:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 15349 transitions. [2020-10-27 18:37:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1218 [2020-10-27 18:37:34,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:34,540 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:37:34,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:37:34,540 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash 205204862, now seen corresponding path program 1 times [2020-10-27 18:37:34,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:34,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008331047] [2020-10-27 18:37:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:39,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:39,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1239 [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 662 [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:37:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:39,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:37:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:39,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:39,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:37:39,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:39,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:37:39,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:37:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:39,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:39,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:37:39,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:39,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:37:39,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:39,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:37:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:37:40,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:37:40,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:37:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:40,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:40,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:37:40,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 18:37:40,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:37:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:37:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-27 18:37:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2020-10-27 18:37:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:40,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 18:37:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-27 18:37:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:37:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1125 [2020-10-27 18:37:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:37:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:37:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:37:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 654 proven. 298 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2020-10-27 18:37:43,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008331047] [2020-10-27 18:37:43,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:37:43,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:37:43,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047064196] [2020-10-27 18:37:43,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:37:43,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:37:43,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:37:43,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:37:43,377 INFO L87 Difference]: Start difference. First operand 13793 states and 15349 transitions. Second operand 8 states. [2020-10-27 18:37:47,700 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:37:55,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:37:55,611 INFO L93 Difference]: Finished difference Result 31280 states and 35723 transitions. [2020-10-27 18:37:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 18:37:55,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1217 [2020-10-27 18:37:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:37:55,666 INFO L225 Difference]: With dead ends: 31280 [2020-10-27 18:37:55,667 INFO L226 Difference]: Without dead ends: 17493 [2020-10-27 18:37:55,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-27 18:37:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17493 states. [2020-10-27 18:37:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17493 to 17257. [2020-10-27 18:37:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17257 states. [2020-10-27 18:37:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17257 states to 17257 states and 19121 transitions. [2020-10-27 18:37:56,103 INFO L78 Accepts]: Start accepts. Automaton has 17257 states and 19121 transitions. Word has length 1217 [2020-10-27 18:37:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:37:56,105 INFO L481 AbstractCegarLoop]: Abstraction has 17257 states and 19121 transitions. [2020-10-27 18:37:56,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:37:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 17257 states and 19121 transitions. [2020-10-27 18:37:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2020-10-27 18:37:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:37:56,144 INFO L422 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:37:56,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:37:56,144 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:37:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:37:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1468646071, now seen corresponding path program 1 times [2020-10-27 18:37:56,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:37:56,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744752030] [2020-10-27 18:37:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:37:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:37:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:37:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking...