/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/array-examples/standard_strcpy_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:30:48,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:30:48,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:30:48,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:30:48,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:30:48,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:30:48,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:30:48,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:30:48,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:30:48,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:30:48,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:30:48,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:30:48,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:30:48,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:30:48,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:30:48,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:30:48,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:30:48,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:30:48,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:30:48,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:30:48,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:30:48,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:30:48,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:30:48,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:30:48,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:30:48,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:30:48,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:30:48,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:30:48,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:30:48,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:30:48,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:30:48,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:30:48,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:30:48,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:30:48,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:30:48,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:30:48,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:30:48,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:30:48,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:30:48,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:30:48,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:30:48,719 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 14:30:48,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:30:48,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:30:48,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:30:48,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:30:48,772 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:30:48,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:30:48,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:30:48,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:30:48,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:30:48,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:30:48,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:30:48,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:30:48,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:30:48,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:30:48,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:30:48,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:30:48,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:30:48,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:30:48,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:30:48,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:30:48,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:30:48,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:30:48,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:30:48,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:30:48,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:30:48,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:30:48,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:30:48,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:30:48,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:30:48,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:30:49,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:30:49,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:30:49,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:30:49,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:30:49,203 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:30:49,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_ground-1.i [2020-10-27 14:30:49,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9dcbdadd/706c524ed05547eeb0d94813d7f70e27/FLAGed44332c9 [2020-10-27 14:30:49,967 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:30:49,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_strcpy_ground-1.i [2020-10-27 14:30:49,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9dcbdadd/706c524ed05547eeb0d94813d7f70e27/FLAGed44332c9 [2020-10-27 14:30:50,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9dcbdadd/706c524ed05547eeb0d94813d7f70e27 [2020-10-27 14:30:50,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:30:50,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:30:50,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:30:50,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:30:50,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:30:50,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e99238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50, skipping insertion in model container [2020-10-27 14:30:50,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:30:50,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:30:50,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:30:50,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:30:50,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:30:50,728 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:30:50,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50 WrapperNode [2020-10-27 14:30:50,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:30:50,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:30:50,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:30:50,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:30:50,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (1/1) ... [2020-10-27 14:30:50,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:30:50,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:30:50,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:30:50,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:30:50,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (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 14:30:50,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:30:50,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:30:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:30:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:30:50,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:30:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:30:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:30:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:30:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:30:50,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:30:50,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:30:50,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:30:50,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:30:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:30:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:30:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:30:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:30:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:30:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:30:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:30:51,337 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:30:51,338 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:30:51,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:51 BoogieIcfgContainer [2020-10-27 14:30:51,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:30:51,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:30:51,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:30:51,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:30:51,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:30:50" (1/3) ... [2020-10-27 14:30:51,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35859149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:51, skipping insertion in model container [2020-10-27 14:30:51,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:50" (2/3) ... [2020-10-27 14:30:51,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35859149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:51, skipping insertion in model container [2020-10-27 14:30:51,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:51" (3/3) ... [2020-10-27 14:30:51,352 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-1.i [2020-10-27 14:30:51,367 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:30:51,372 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:30:51,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:30:51,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:30:51,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:30:51,464 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:30:51,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:30:51,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:30:51,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:30:51,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:30:51,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:30:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-27 14:30:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 14:30:51,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:51,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:51,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash -229235138, now seen corresponding path program 1 times [2020-10-27 14:30:51,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:51,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39936476] [2020-10-27 14:30:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:52,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:30:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:30:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-27 14:30:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:30:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:52,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:30:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:52,333 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 14:30:52,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39936476] [2020-10-27 14:30:52,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:52,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:30:52,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338663718] [2020-10-27 14:30:52,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:30:52,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:52,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:30:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:30:52,362 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-27 14:30:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:52,469 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-10-27 14:30:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:30:52,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-27 14:30:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:52,480 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:30:52,481 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 14:30:52,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:30:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 14:30:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 14:30:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 14:30:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-27 14:30:52,530 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-10-27 14:30:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:52,531 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-27 14:30:52,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:30:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-27 14:30:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:30:52,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:52,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:52,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:30:52,533 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:52,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1106760841, now seen corresponding path program 1 times [2020-10-27 14:30:52,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:52,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582726347] [2020-10-27 14:30:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:52,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:52,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:30:52,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:30:52,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:30:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:30:52,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:52,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:52,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:30:52,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:52,815 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 14:30:52,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582726347] [2020-10-27 14:30:52,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:52,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:30:52,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091791191] [2020-10-27 14:30:52,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:30:52,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:30:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:30:52,820 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-10-27 14:30:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:52,950 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-27 14:30:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:30:52,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-27 14:30:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:52,952 INFO L225 Difference]: With dead ends: 40 [2020-10-27 14:30:52,952 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:30:52,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:30:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:30:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:30:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:30:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-27 14:30:52,962 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2020-10-27 14:30:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:52,962 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-27 14:30:52,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:30:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-27 14:30:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:30:52,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:52,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:52,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:30:52,965 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:52,966 INFO L82 PathProgramCache]: Analyzing trace with hash 972864478, now seen corresponding path program 1 times [2020-10-27 14:30:52,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:52,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181659433] [2020-10-27 14:30:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:53,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:53,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:30:53,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-27 14:30:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:30:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:53,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:53,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:30:53,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:53,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:30:53,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181659433] [2020-10-27 14:30:53,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:53,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:30:53,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538441793] [2020-10-27 14:30:53,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:30:53,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:53,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:30:53,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:30:53,545 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-27 14:30:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:53,645 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2020-10-27 14:30:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:30:53,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 14:30:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:53,647 INFO L225 Difference]: With dead ends: 46 [2020-10-27 14:30:53,647 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 14:30:53,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:30:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 14:30:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 14:30:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:30:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-27 14:30:53,655 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2020-10-27 14:30:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:53,656 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-27 14:30:53,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:30:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-27 14:30:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:30:53,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:53,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:53,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:30:53,658 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1562463556, now seen corresponding path program 1 times [2020-10-27 14:30:53,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:53,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322368002] [2020-10-27 14:30:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:30:54,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-27 14:30:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:30:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:30:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:54,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:54,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:54,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:30:54,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:54,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:54,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:54,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:30:54,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322368002] [2020-10-27 14:30:54,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:54,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:30:54,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527704824] [2020-10-27 14:30:54,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:30:54,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:30:54,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:30:54,534 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 9 states. [2020-10-27 14:30:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:54,806 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-27 14:30:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:30:54,807 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-27 14:30:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:54,808 INFO L225 Difference]: With dead ends: 39 [2020-10-27 14:30:54,808 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 14:30:54,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:30:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 14:30:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-27 14:30:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:30:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:30:54,818 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-10-27 14:30:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:54,818 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:30:54,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:30:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:30:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 14:30:54,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:54,819 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:30:54,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:30:54,820 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:54,821 INFO L82 PathProgramCache]: Analyzing trace with hash 253022494, now seen corresponding path program 1 times [2020-10-27 14:30:54,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:54,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994535583] [2020-10-27 14:30:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:30:55,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 14:30:55,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:30:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:55,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:30:55,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:55,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:55,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:30:55,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:30:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:55,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:55,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:55,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:55,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:30:55,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994535583] [2020-10-27 14:30:55,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:55,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:30:55,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488457546] [2020-10-27 14:30:55,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:30:55,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:55,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:30:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:30:55,307 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-27 14:30:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:55,395 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-27 14:30:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:30:55,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-27 14:30:55,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:55,400 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:30:55,400 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:30:55,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:30:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:30:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-27 14:30:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:30:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:30:55,415 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 30 [2020-10-27 14:30:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:55,415 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:30:55,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:30:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:30:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:30:55,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:55,417 INFO L422 BasicCegarLoop]: trace histogram [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 14:30:55,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:30:55,418 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:55,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:55,418 INFO L82 PathProgramCache]: Analyzing trace with hash 583430776, now seen corresponding path program 2 times [2020-10-27 14:30:55,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:55,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569149962] [2020-10-27 14:30:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:30:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 14:30:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:55,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:30:55,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:30:55,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569149962] [2020-10-27 14:30:55,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:55,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:30:55,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146417241] [2020-10-27 14:30:55,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:30:55,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:55,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:30:55,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:30:55,982 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-10-27 14:30:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:56,086 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-27 14:30:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:30:56,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 14:30:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:56,087 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:30:56,087 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 14:30:56,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:30:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 14:30:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-27 14:30:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:30:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:30:56,096 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 31 [2020-10-27 14:30:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:56,096 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:30:56,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:30:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:30:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:30:56,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:56,097 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:56,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:30:56,098 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:56,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:56,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2058814370, now seen corresponding path program 3 times [2020-10-27 14:30:56,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:56,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357278128] [2020-10-27 14:30:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:30:56,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-27 14:30:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:30:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:30:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:56,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:30:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:30:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:30:56,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357278128] [2020-10-27 14:30:56,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:56,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:30:56,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893291559] [2020-10-27 14:30:56,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:30:56,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:30:56,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:30:56,954 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 7 states. [2020-10-27 14:30:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:57,088 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-10-27 14:30:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:30:57,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-27 14:30:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:57,092 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:30:57,092 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:30:57,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:30:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:30:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-27 14:30:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 14:30:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-27 14:30:57,111 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 32 [2020-10-27 14:30:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:57,111 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-27 14:30:57,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:30:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-27 14:30:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:30:57,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:57,113 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:30:57,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:30:57,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:57,114 INFO L82 PathProgramCache]: Analyzing trace with hash 832290443, now seen corresponding path program 4 times [2020-10-27 14:30:57,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:57,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474082894] [2020-10-27 14:30:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:58,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:30:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-27 14:30:58,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:30:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:30:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:58,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:58,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:30:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 14:30:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:58,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:58,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:30:58,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:30:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:30:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 14:30:58,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474082894] [2020-10-27 14:30:58,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:58,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:30:58,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379020918] [2020-10-27 14:30:58,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:30:58,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:58,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:30:58,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:30:58,428 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2020-10-27 14:30:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:58,566 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-27 14:30:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:30:58,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-27 14:30:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:58,569 INFO L225 Difference]: With dead ends: 67 [2020-10-27 14:30:58,569 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 14:30:58,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:30:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 14:30:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-27 14:30:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:30:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-27 14:30:58,588 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 35 [2020-10-27 14:30:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:58,589 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-27 14:30:58,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:30:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-27 14:30:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:30:58,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:58,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:58,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:30:58,591 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 442164593, now seen corresponding path program 5 times [2020-10-27 14:30:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:58,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696743758] [2020-10-27 14:30:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:31:00,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-10-27 14:31:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:31:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:31:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:00,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:31:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:31:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 14:31:00,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696743758] [2020-10-27 14:31:00,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:00,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:31:00,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129633691] [2020-10-27 14:31:00,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:31:00,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:00,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:31:00,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:31:00,800 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 11 states. [2020-10-27 14:31:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:01,271 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-27 14:31:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:31:01,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-27 14:31:01,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:01,273 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:31:01,273 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:31:01,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:31:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:31:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 14:31:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 14:31:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-27 14:31:01,281 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2020-10-27 14:31:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:01,281 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-27 14:31:01,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:31:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-27 14:31:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:31:01,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:01,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:01,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:31:01,283 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:01,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1596073832, now seen corresponding path program 6 times [2020-10-27 14:31:01,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:01,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980129575] [2020-10-27 14:31:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:03,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:03,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:31:03,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:03,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-27 14:31:03,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:31:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:03,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:03,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:03,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:03,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:03,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:03,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:31:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:03,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:03,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:03,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:03,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:31:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:31:03,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980129575] [2020-10-27 14:31:03,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:03,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:31:03,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935749660] [2020-10-27 14:31:03,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:31:03,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:03,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:31:03,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:31:03,369 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 8 states. [2020-10-27 14:31:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:03,488 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-10-27 14:31:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:31:03,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-27 14:31:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:03,490 INFO L225 Difference]: With dead ends: 74 [2020-10-27 14:31:03,490 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 14:31:03,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:31:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 14:31:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-27 14:31:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:31:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-27 14:31:03,509 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 39 [2020-10-27 14:31:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:03,509 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-27 14:31:03,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:31:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-27 14:31:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:31:03,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:03,512 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:03,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:31:03,513 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash 910367870, now seen corresponding path program 7 times [2020-10-27 14:31:03,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:03,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169865675] [2020-10-27 14:31:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:05,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:31:05,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:05,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2012 [2020-10-27 14:31:05,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:31:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:31:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:05,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:05,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:05,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:31:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:05,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:05,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:05,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:31:05,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169865675] [2020-10-27 14:31:05,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:05,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:31:05,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642677166] [2020-10-27 14:31:05,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:31:05,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:05,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:31:05,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:31:05,655 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-10-27 14:31:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:05,745 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 14:31:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:31:05,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-27 14:31:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:05,747 INFO L225 Difference]: With dead ends: 75 [2020-10-27 14:31:05,747 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:31:05,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:31:05,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:31:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-27 14:31:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:31:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-27 14:31:05,766 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 40 [2020-10-27 14:31:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:05,766 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-27 14:31:05,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:31:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-27 14:31:05,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:31:05,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:05,769 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:05,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:31:05,769 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:05,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1300649304, now seen corresponding path program 8 times [2020-10-27 14:31:05,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:05,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425646489] [2020-10-27 14:31:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:08,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:08,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:31:08,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2448 [2020-10-27 14:31:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:31:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:31:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:08,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:08,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:08,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:08,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:31:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:08,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:08,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:31:08,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425646489] [2020-10-27 14:31:08,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:08,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:31:08,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861732831] [2020-10-27 14:31:08,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:31:08,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:08,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:31:08,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:31:08,369 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2020-10-27 14:31:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:08,474 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-27 14:31:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:31:08,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-27 14:31:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:08,475 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:31:08,475 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 14:31:08,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:31:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 14:31:08,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 14:31:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:31:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-27 14:31:08,485 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 41 [2020-10-27 14:31:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:08,485 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-27 14:31:08,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:31:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-27 14:31:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 14:31:08,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:08,488 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:08,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:31:08,488 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash 514471870, now seen corresponding path program 9 times [2020-10-27 14:31:08,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:08,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512157693] [2020-10-27 14:31:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:31:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2652 [2020-10-27 14:31:11,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:31:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:11,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:31:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:11,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:11,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:11,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:11,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:11,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:11,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:31:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:11,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:11,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:11,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:11,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:11,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:11,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:31:11,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512157693] [2020-10-27 14:31:11,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:11,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:31:11,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991454652] [2020-10-27 14:31:11,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:31:11,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:11,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:31:11,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:31:11,354 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 11 states. [2020-10-27 14:31:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:11,466 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-27 14:31:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:31:11,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-27 14:31:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:11,467 INFO L225 Difference]: With dead ends: 77 [2020-10-27 14:31:11,467 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:31:11,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:31:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:31:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-27 14:31:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 14:31:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-27 14:31:11,479 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 42 [2020-10-27 14:31:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:11,480 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-27 14:31:11,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:31:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-27 14:31:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:31:11,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:11,483 INFO L422 BasicCegarLoop]: trace histogram [8, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:11,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:31:11,483 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1912775192, now seen corresponding path program 10 times [2020-10-27 14:31:11,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:11,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642500855] [2020-10-27 14:31:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:31:14,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3036 [2020-10-27 14:31:14,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:31:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:31:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:14,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:14,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 14:31:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:31:14,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642500855] [2020-10-27 14:31:14,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:14,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:31:14,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315338927] [2020-10-27 14:31:14,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:31:14,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:14,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:31:14,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:31:14,706 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 12 states. [2020-10-27 14:31:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:14,802 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-10-27 14:31:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:31:14,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-27 14:31:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:14,804 INFO L225 Difference]: With dead ends: 78 [2020-10-27 14:31:14,804 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 14:31:14,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:31:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 14:31:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-27 14:31:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:31:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-27 14:31:14,820 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 43 [2020-10-27 14:31:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:14,820 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-27 14:31:14,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:31:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-27 14:31:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:31:14,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:14,823 INFO L422 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:14,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:31:14,824 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:14,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1984462082, now seen corresponding path program 11 times [2020-10-27 14:31:14,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:14,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020358994] [2020-10-27 14:31:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:31:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3308 [2020-10-27 14:31:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:31:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:31:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:31:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:31:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:31:18,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020358994] [2020-10-27 14:31:18,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:18,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:31:18,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192897273] [2020-10-27 14:31:18,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:31:18,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:18,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:31:18,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:31:18,644 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 12 states. [2020-10-27 14:31:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:19,126 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-10-27 14:31:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:31:19,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-27 14:31:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:19,127 INFO L225 Difference]: With dead ends: 61 [2020-10-27 14:31:19,127 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 14:31:19,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 14:31:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-27 14:31:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 14:31:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-27 14:31:19,137 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 44 [2020-10-27 14:31:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:19,137 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-27 14:31:19,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:31:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-27 14:31:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:31:19,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:19,139 INFO L422 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:19,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:31:19,139 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash 710847704, now seen corresponding path program 12 times [2020-10-27 14:31:19,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321810105] [2020-10-27 14:31:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:19,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:31:21,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-27 14:31:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:31:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:31:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:21,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:21,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:31:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:31:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:21,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:21,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-27 14:31:21,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321810105] [2020-10-27 14:31:21,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:21,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:31:21,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543814380] [2020-10-27 14:31:21,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:31:21,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:21,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:31:21,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:21,570 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 13 states. [2020-10-27 14:31:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:21,695 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2020-10-27 14:31:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:31:21,696 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-27 14:31:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:21,697 INFO L225 Difference]: With dead ends: 95 [2020-10-27 14:31:21,697 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 14:31:21,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 14:31:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 14:31:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:31:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-10-27 14:31:21,705 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 52 [2020-10-27 14:31:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:21,705 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-10-27 14:31:21,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:31:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-10-27 14:31:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:31:21,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:21,706 INFO L422 BasicCegarLoop]: trace histogram [10, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:21,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:31:21,706 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:21,707 INFO L82 PathProgramCache]: Analyzing trace with hash 975269554, now seen corresponding path program 13 times [2020-10-27 14:31:21,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:21,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681448179] [2020-10-27 14:31:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:24,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:24,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 14:31:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:24,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:24,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:31:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:24,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:31:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:31:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:24,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:24,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:24,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:24,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:31:24,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:24,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:24,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:31:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-27 14:31:24,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681448179] [2020-10-27 14:31:24,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:24,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:31:24,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597069666] [2020-10-27 14:31:24,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:31:24,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:24,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:31:24,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:24,825 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 13 states. [2020-10-27 14:31:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:25,496 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:31:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:31:25,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-27 14:31:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:25,498 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:31:25,498 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 14:31:25,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:31:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 14:31:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-27 14:31:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:31:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-27 14:31:25,506 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 53 [2020-10-27 14:31:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:25,507 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-27 14:31:25,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:31:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-27 14:31:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 14:31:25,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:25,508 INFO L422 BasicCegarLoop]: trace histogram [10, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:25,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:31:25,508 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1928406869, now seen corresponding path program 14 times [2020-10-27 14:31:25,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:25,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582418351] [2020-10-27 14:31:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:28,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:28,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:31:28,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2730 [2020-10-27 14:31:28,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:31:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:31:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:28,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:28,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:31:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:31:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:28,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:28,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:28,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:28,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:31:28,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582418351] [2020-10-27 14:31:28,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:28,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:31:28,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589549748] [2020-10-27 14:31:28,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:31:28,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:28,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:31:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:31:28,441 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 14 states. [2020-10-27 14:31:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:28,586 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2020-10-27 14:31:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:31:28,586 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-27 14:31:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:28,587 INFO L225 Difference]: With dead ends: 102 [2020-10-27 14:31:28,587 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 14:31:28,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:31:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 14:31:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-27 14:31:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:31:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-27 14:31:28,597 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 56 [2020-10-27 14:31:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:28,598 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-27 14:31:28,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:31:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-27 14:31:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:31:28,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:28,599 INFO L422 BasicCegarLoop]: trace histogram [11, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:28,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:31:28,599 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:28,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1752621691, now seen corresponding path program 15 times [2020-10-27 14:31:28,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:28,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648847197] [2020-10-27 14:31:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:28,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:31:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2666 [2020-10-27 14:31:31,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:31:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 14:31:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:31:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:31:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:31,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:31,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:31,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:31,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 14:31:31,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648847197] [2020-10-27 14:31:31,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:31,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:31:31,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126103556] [2020-10-27 14:31:31,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:31:31,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:31:31,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:31:31,874 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 14 states. [2020-10-27 14:31:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:32,517 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-27 14:31:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:31:32,518 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-27 14:31:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:32,519 INFO L225 Difference]: With dead ends: 74 [2020-10-27 14:31:32,519 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:31:32,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:31:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:31:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:31:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:31:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-10-27 14:31:32,532 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 57 [2020-10-27 14:31:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:32,533 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-10-27 14:31:32,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:31:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-10-27 14:31:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:31:32,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:32,534 INFO L422 BasicCegarLoop]: trace histogram [11, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:32,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:31:32,535 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:32,535 INFO L82 PathProgramCache]: Analyzing trace with hash 839700575, now seen corresponding path program 16 times [2020-10-27 14:31:32,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:32,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502205840] [2020-10-27 14:31:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:32,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2654 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:31:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:31:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:35,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:35,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:35,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:31:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:35,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:35,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:35,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:35,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:31:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:35,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:31:35,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502205840] [2020-10-27 14:31:35,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:35,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:31:35,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565464752] [2020-10-27 14:31:35,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:31:35,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:35,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:31:35,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:31:35,437 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 15 states. [2020-10-27 14:31:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:35,626 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-27 14:31:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:31:35,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-27 14:31:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:35,628 INFO L225 Difference]: With dead ends: 119 [2020-10-27 14:31:35,628 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:31:35,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:31:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:31:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-27 14:31:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:31:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-27 14:31:35,647 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 65 [2020-10-27 14:31:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:35,647 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-27 14:31:35,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:31:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-27 14:31:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 14:31:35,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:35,659 INFO L422 BasicCegarLoop]: trace histogram [12, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:35,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:31:35,659 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:35,660 INFO L82 PathProgramCache]: Analyzing trace with hash -647405371, now seen corresponding path program 17 times [2020-10-27 14:31:35,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:35,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136637336] [2020-10-27 14:31:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:40,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4596 [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:31:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:40,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:40,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:40,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:40,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:40,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:31:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:40,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:31:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:40,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:40,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:40,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:40,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:31:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:40,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:40,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:40,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:40,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 14:31:40,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136637336] [2020-10-27 14:31:40,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:40,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:31:40,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378239806] [2020-10-27 14:31:40,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:31:40,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:40,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:31:40,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:31:40,928 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 15 states. [2020-10-27 14:31:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:41,745 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-10-27 14:31:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:31:41,745 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-27 14:31:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:41,746 INFO L225 Difference]: With dead ends: 83 [2020-10-27 14:31:41,747 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:31:41,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:31:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:31:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-10-27 14:31:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:31:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-27 14:31:41,757 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 66 [2020-10-27 14:31:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:41,757 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-27 14:31:41,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:31:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-27 14:31:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:31:41,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:41,758 INFO L422 BasicCegarLoop]: trace histogram [12, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:41,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:31:41,759 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:41,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1911172193, now seen corresponding path program 18 times [2020-10-27 14:31:41,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:41,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225959099] [2020-10-27 14:31:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3546 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:31:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:31:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:45,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:45,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:45,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:45,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:31:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:31:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:31:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 78 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 14:31:45,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225959099] [2020-10-27 14:31:45,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:45,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:31:45,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758661838] [2020-10-27 14:31:45,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:31:45,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:31:45,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:31:45,561 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 16 states. [2020-10-27 14:31:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:45,698 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-10-27 14:31:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:31:45,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-27 14:31:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:45,703 INFO L225 Difference]: With dead ends: 136 [2020-10-27 14:31:45,703 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:31:45,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:31:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:31:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-27 14:31:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:31:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-27 14:31:45,712 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 74 [2020-10-27 14:31:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:45,712 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-27 14:31:45,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:31:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-27 14:31:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 14:31:45,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:45,713 INFO L422 BasicCegarLoop]: trace histogram [13, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:45,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:31:45,714 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:45,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:45,714 INFO L82 PathProgramCache]: Analyzing trace with hash 320755193, now seen corresponding path program 19 times [2020-10-27 14:31:45,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:45,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621377787] [2020-10-27 14:31:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:49,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3855 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:31:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:49,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:49,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:49,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:49,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:49,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:49,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:31:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:49,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:31:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:49,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:49,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:49,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:49,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:49,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:31:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:49,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:31:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 40 proven. 30 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-27 14:31:49,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621377787] [2020-10-27 14:31:49,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:49,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:31:49,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81470879] [2020-10-27 14:31:49,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:31:49,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:31:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:49,825 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 13 states. [2020-10-27 14:31:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:50,171 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-10-27 14:31:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:31:50,172 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-10-27 14:31:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:50,173 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:31:50,173 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 14:31:50,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 14:31:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-27 14:31:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 14:31:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-10-27 14:31:50,190 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 75 [2020-10-27 14:31:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:50,190 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-10-27 14:31:50,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:31:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-10-27 14:31:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 14:31:50,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:50,191 INFO L422 BasicCegarLoop]: trace histogram [13, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:50,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:31:50,191 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:50,192 INFO L82 PathProgramCache]: Analyzing trace with hash 375879148, now seen corresponding path program 20 times [2020-10-27 14:31:50,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:50,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576629961] [2020-10-27 14:31:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3510 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:31:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:53,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:31:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:31:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:53,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:31:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:31:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:31:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:53,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:53,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:53,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:53,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:31:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 91 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-27 14:31:53,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576629961] [2020-10-27 14:31:53,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:53,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:31:53,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134191695] [2020-10-27 14:31:53,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:31:53,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:53,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:31:53,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:31:53,986 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 17 states. [2020-10-27 14:31:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:54,082 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2020-10-27 14:31:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:31:54,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2020-10-27 14:31:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:54,084 INFO L225 Difference]: With dead ends: 143 [2020-10-27 14:31:54,084 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:31:54,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:31:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:31:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-27 14:31:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:31:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-27 14:31:54,094 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 78 [2020-10-27 14:31:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:54,094 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-27 14:31:54,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:31:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-27 14:31:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:31:54,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:54,095 INFO L422 BasicCegarLoop]: trace histogram [14, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:54,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:31:54,097 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash 72563526, now seen corresponding path program 21 times [2020-10-27 14:31:54,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:54,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788513295] [2020-10-27 14:31:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:54,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:57,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:57,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:31:57,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3453 [2020-10-27 14:31:57,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:31:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:31:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:31:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:31:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:57,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:57,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:57,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:57,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:57,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:57,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:57,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:57,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:57,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:31:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:57,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:57,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:31:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:57,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 8 proven. 105 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-27 14:31:57,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788513295] [2020-10-27 14:31:57,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:57,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:31:57,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798934671] [2020-10-27 14:31:57,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:31:57,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:31:57,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:57,849 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 18 states. [2020-10-27 14:31:57,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:57,962 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2020-10-27 14:31:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:31:57,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-27 14:31:57,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:57,963 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:31:57,964 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:31:57,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:31:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-27 14:31:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 14:31:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-27 14:31:57,976 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 79 [2020-10-27 14:31:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:57,976 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-27 14:31:57,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:31:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-27 14:31:57,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:31:57,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:57,977 INFO L422 BasicCegarLoop]: trace histogram [15, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:57,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:31:57,978 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash -740286164, now seen corresponding path program 22 times [2020-10-27 14:31:57,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:57,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068753631] [2020-10-27 14:31:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:02,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:02,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 14:32:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4564 [2020-10-27 14:32:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:32:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:32:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:02,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:02,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:32:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:02,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:02,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:32:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:02,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:32:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:02,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:32:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:02,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:02,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:02,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 8 proven. 120 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-27 14:32:02,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068753631] [2020-10-27 14:32:02,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:02,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:32:02,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204546231] [2020-10-27 14:32:02,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:32:02,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:02,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:32:02,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:32:02,855 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 19 states. [2020-10-27 14:32:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:02,971 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-10-27 14:32:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:32:02,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-27 14:32:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:02,973 INFO L225 Difference]: With dead ends: 145 [2020-10-27 14:32:02,973 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 14:32:02,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:32:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 14:32:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-27 14:32:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:32:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-27 14:32:02,982 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 80 [2020-10-27 14:32:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:02,983 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-27 14:32:02,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:32:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-27 14:32:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:32:02,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:02,984 INFO L422 BasicCegarLoop]: trace histogram [16, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:02,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:32:02,984 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash -168822778, now seen corresponding path program 23 times [2020-10-27 14:32:02,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:02,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997533126] [2020-10-27 14:32:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4724 [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 14:32:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:08,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:32:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:32:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:32:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:08,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:08,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:08,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:08,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:32:08,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:08,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:08,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:32:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:08,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:08,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:08,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:08,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:08,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:32:08,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:08,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:08,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:08,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:08,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-27 14:32:08,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997533126] [2020-10-27 14:32:08,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:08,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:32:08,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818735590] [2020-10-27 14:32:08,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:32:08,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:08,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:32:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:32:08,609 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 17 states. [2020-10-27 14:32:09,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:09,485 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-10-27 14:32:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:32:09,486 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-10-27 14:32:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:09,488 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:32:09,488 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 14:32:09,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:32:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 14:32:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-27 14:32:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 14:32:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-10-27 14:32:09,498 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 81 [2020-10-27 14:32:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:09,498 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-10-27 14:32:09,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:32:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-10-27 14:32:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:32:09,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:09,499 INFO L422 BasicCegarLoop]: trace histogram [16, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:09,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:32:09,500 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1067482303, now seen corresponding path program 24 times [2020-10-27 14:32:09,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:09,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295143884] [2020-10-27 14:32:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:32:14,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:14,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:32:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:14,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:32:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:32:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:14,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:14,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:32:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 8 proven. 136 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-27 14:32:14,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295143884] [2020-10-27 14:32:14,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:14,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:32:14,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276718416] [2020-10-27 14:32:14,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:32:14,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:14,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:32:14,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:32:14,859 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 20 states. [2020-10-27 14:32:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:15,005 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2020-10-27 14:32:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:32:15,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 84 [2020-10-27 14:32:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:15,007 INFO L225 Difference]: With dead ends: 152 [2020-10-27 14:32:15,007 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 14:32:15,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:32:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 14:32:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-27 14:32:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:32:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-10-27 14:32:15,017 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 84 [2020-10-27 14:32:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:15,018 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-10-27 14:32:15,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:32:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-10-27 14:32:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:32:15,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:15,019 INFO L422 BasicCegarLoop]: trace histogram [17, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:15,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:32:15,019 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1781180775, now seen corresponding path program 25 times [2020-10-27 14:32:15,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:15,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053079623] [2020-10-27 14:32:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:20,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:20,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:32:20,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:20,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:32:20,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:32:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:20,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 14:32:20,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:20,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:32:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:20,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:32:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:20,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:20,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:32:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:20,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:20,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:20,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:32:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:20,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:20,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:20,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:20,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 11 proven. 92 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 14:32:20,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053079623] [2020-10-27 14:32:20,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:20,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:32:20,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455494584] [2020-10-27 14:32:20,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:32:20,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:20,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:32:20,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:32:20,800 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 18 states. [2020-10-27 14:32:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:21,828 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2020-10-27 14:32:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:32:21,829 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-27 14:32:21,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:21,830 INFO L225 Difference]: With dead ends: 102 [2020-10-27 14:32:21,830 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:32:21,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:32:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:32:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:32:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:32:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2020-10-27 14:32:21,840 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 85 [2020-10-27 14:32:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:21,840 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2020-10-27 14:32:21,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:32:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2020-10-27 14:32:21,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:32:21,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:21,842 INFO L422 BasicCegarLoop]: trace histogram [17, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:21,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:32:21,842 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:21,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:21,843 INFO L82 PathProgramCache]: Analyzing trace with hash -160909965, now seen corresponding path program 26 times [2020-10-27 14:32:21,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:21,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299954056] [2020-10-27 14:32:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:26,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 14:32:26,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:32:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:27,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:27,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:32:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:32:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:32:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:27,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:27,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:32:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:27,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:27,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:27,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:27,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:27,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 50 proven. 73 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-27 14:32:27,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299954056] [2020-10-27 14:32:27,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:27,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:32:27,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578625426] [2020-10-27 14:32:27,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:32:27,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:27,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:32:27,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:32:27,735 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 19 states. [2020-10-27 14:32:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:28,639 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2020-10-27 14:32:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:32:28,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-27 14:32:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:28,644 INFO L225 Difference]: With dead ends: 132 [2020-10-27 14:32:28,645 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 14:32:28,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:32:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 14:32:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-27 14:32:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 14:32:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-27 14:32:28,657 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 93 [2020-10-27 14:32:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:28,658 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-27 14:32:28,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:32:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-27 14:32:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 14:32:28,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:28,659 INFO L422 BasicCegarLoop]: trace histogram [17, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:28,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:32:28,659 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:28,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1686908198, now seen corresponding path program 27 times [2020-10-27 14:32:28,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:28,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229309059] [2020-10-27 14:32:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:33,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:33,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 14:32:33,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:32:33,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:32:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:32:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:32:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:32:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:32:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:32:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:32:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 10 proven. 153 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-10-27 14:32:34,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229309059] [2020-10-27 14:32:34,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:34,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:32:34,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676630736] [2020-10-27 14:32:34,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:32:34,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:34,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:32:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:32:34,069 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 21 states. [2020-10-27 14:32:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:34,258 INFO L93 Difference]: Finished difference Result 175 states and 195 transitions. [2020-10-27 14:32:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:32:34,259 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2020-10-27 14:32:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:34,260 INFO L225 Difference]: With dead ends: 175 [2020-10-27 14:32:34,260 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 14:32:34,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:32:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 14:32:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-27 14:32:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:32:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-27 14:32:34,269 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 96 [2020-10-27 14:32:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:34,269 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-27 14:32:34,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:32:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-27 14:32:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:32:34,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:34,270 INFO L422 BasicCegarLoop]: trace histogram [18, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:34,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:32:34,271 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash 953618432, now seen corresponding path program 28 times [2020-10-27 14:32:34,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:34,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509561929] [2020-10-27 14:32:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:39,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:39,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:32:39,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:32:39,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:32:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 14:32:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:32:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:40,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:32:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:40,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:40,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:32:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:32:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:32:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 13 proven. 131 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-27 14:32:40,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509561929] [2020-10-27 14:32:40,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:40,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:32:40,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110184763] [2020-10-27 14:32:40,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:32:40,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:40,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:32:40,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:32:40,326 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 20 states. [2020-10-27 14:32:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:41,720 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-10-27 14:32:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:32:41,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 97 [2020-10-27 14:32:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:41,722 INFO L225 Difference]: With dead ends: 114 [2020-10-27 14:32:41,722 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:32:41,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:32:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:32:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:32:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:32:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2020-10-27 14:32:41,739 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 97 [2020-10-27 14:32:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:41,740 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2020-10-27 14:32:41,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:32:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2020-10-27 14:32:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 14:32:41,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:41,741 INFO L422 BasicCegarLoop]: trace histogram [18, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:41,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:32:41,742 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:41,742 INFO L82 PathProgramCache]: Analyzing trace with hash 606738394, now seen corresponding path program 29 times [2020-10-27 14:32:41,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:41,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012264958] [2020-10-27 14:32:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:32:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 14:32:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:47,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:47,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:47,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:32:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:48,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:48,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:48,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:48,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:32:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:32:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:48,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:48,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:32:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:32:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:48,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:48,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:48,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:48,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:32:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:48,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:48,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:48,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:48,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:32:48,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:48,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:48,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:48,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:48,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:32:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:48,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 52 proven. 116 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:32:48,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012264958] [2020-10-27 14:32:48,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:48,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:32:48,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498020662] [2020-10-27 14:32:48,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:32:48,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:48,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:32:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:32:48,097 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 21 states. [2020-10-27 14:32:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:49,326 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-10-27 14:32:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:32:49,327 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2020-10-27 14:32:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:49,329 INFO L225 Difference]: With dead ends: 148 [2020-10-27 14:32:49,329 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:32:49,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:32:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:32:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-27 14:32:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 14:32:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2020-10-27 14:32:49,342 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 105 [2020-10-27 14:32:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:49,343 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2020-10-27 14:32:49,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:32:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2020-10-27 14:32:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:32:49,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:49,344 INFO L422 BasicCegarLoop]: trace histogram [18, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:49,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:32:49,344 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:49,345 INFO L82 PathProgramCache]: Analyzing trace with hash -882365869, now seen corresponding path program 30 times [2020-10-27 14:32:49,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:49,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987539000] [2020-10-27 14:32:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:32:54,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:32:54,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:32:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:32:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:54,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:32:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:54,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:54,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:32:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:32:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:32:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:54,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:54,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:32:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:54,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:32:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:54,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 12 proven. 171 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-27 14:32:54,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987539000] [2020-10-27 14:32:54,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:54,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:32:54,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566247901] [2020-10-27 14:32:54,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:32:54,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:54,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:32:54,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:32:54,854 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 22 states. [2020-10-27 14:32:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:55,088 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-10-27 14:32:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:32:55,088 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 108 [2020-10-27 14:32:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:55,090 INFO L225 Difference]: With dead ends: 198 [2020-10-27 14:32:55,090 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 14:32:55,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:32:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 14:32:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-10-27 14:32:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:32:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-10-27 14:32:55,109 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 108 [2020-10-27 14:32:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:55,110 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-10-27 14:32:55,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:32:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-10-27 14:32:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:32:55,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:55,114 INFO L422 BasicCegarLoop]: trace histogram [19, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:55,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:32:55,114 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1208194605, now seen corresponding path program 31 times [2020-10-27 14:32:55,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:55,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429986079] [2020-10-27 14:32:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:00,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:00,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 14:33:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:33:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:33:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:33:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:01,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:33:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:33:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:33:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:01,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:01,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:01,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:01,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:01,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:01,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 15 proven. 177 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-27 14:33:01,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429986079] [2020-10-27 14:33:01,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:01,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:33:01,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443004702] [2020-10-27 14:33:01,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:33:01,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:33:01,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:33:01,569 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 22 states. [2020-10-27 14:33:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:03,159 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2020-10-27 14:33:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:33:03,161 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-27 14:33:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:03,162 INFO L225 Difference]: With dead ends: 126 [2020-10-27 14:33:03,162 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:33:03,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:33:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:33:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:33:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:33:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-10-27 14:33:03,182 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 109 [2020-10-27 14:33:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:03,182 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-10-27 14:33:03,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:33:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-10-27 14:33:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 14:33:03,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:03,184 INFO L422 BasicCegarLoop]: trace histogram [19, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:03,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:33:03,184 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:03,184 INFO L82 PathProgramCache]: Analyzing trace with hash 695738631, now seen corresponding path program 32 times [2020-10-27 14:33:03,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:03,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497156895] [2020-10-27 14:33:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 14:33:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:33:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:33:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:33:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:33:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:33:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:33:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:33:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-27 14:33:08,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497156895] [2020-10-27 14:33:08,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:08,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:33:08,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498123482] [2020-10-27 14:33:08,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:33:08,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:08,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:33:08,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:33:08,634 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 23 states. [2020-10-27 14:33:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:08,795 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2020-10-27 14:33:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:33:08,796 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 117 [2020-10-27 14:33:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:08,797 INFO L225 Difference]: With dead ends: 215 [2020-10-27 14:33:08,798 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:33:08,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:33:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:33:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-27 14:33:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 14:33:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-27 14:33:08,811 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 117 [2020-10-27 14:33:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:08,812 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-27 14:33:08,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:33:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-27 14:33:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 14:33:08,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:08,813 INFO L422 BasicCegarLoop]: trace histogram [20, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:08,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:33:08,813 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1678731885, now seen corresponding path program 33 times [2020-10-27 14:33:08,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:08,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001295103] [2020-10-27 14:33:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 14:33:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:33:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:33:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:33:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:14,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:33:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:33:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:33:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:14,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 14:33:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:14,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:14,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:14,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:14,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:14,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:14,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:14,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:14,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 98 proven. 122 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-27 14:33:14,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001295103] [2020-10-27 14:33:14,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:14,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:33:14,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063614669] [2020-10-27 14:33:14,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:33:14,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:14,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:33:14,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:33:14,589 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 23 states. [2020-10-27 14:33:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:15,809 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2020-10-27 14:33:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:33:15,809 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 118 [2020-10-27 14:33:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:15,812 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:33:15,812 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 14:33:15,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:33:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 14:33:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-27 14:33:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:33:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 136 transitions. [2020-10-27 14:33:15,825 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 136 transitions. Word has length 118 [2020-10-27 14:33:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:15,826 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 136 transitions. [2020-10-27 14:33:15,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:33:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 136 transitions. [2020-10-27 14:33:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 14:33:15,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:15,827 INFO L422 BasicCegarLoop]: trace histogram [20, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:15,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:33:15,827 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -14941228, now seen corresponding path program 34 times [2020-10-27 14:33:15,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:15,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282626056] [2020-10-27 14:33:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:20,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:33:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:21,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:21,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:33:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:33:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:33:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:21,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:33:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:33:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:21,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:33:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:33:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 14 proven. 210 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-27 14:33:21,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282626056] [2020-10-27 14:33:21,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:21,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:33:21,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385901522] [2020-10-27 14:33:21,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:33:21,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:33:21,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:33:21,325 INFO L87 Difference]: Start difference. First operand 124 states and 136 transitions. Second operand 24 states. [2020-10-27 14:33:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:21,526 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2020-10-27 14:33:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:33:21,527 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 121 [2020-10-27 14:33:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:21,528 INFO L225 Difference]: With dead ends: 222 [2020-10-27 14:33:21,528 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 14:33:21,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:33:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 14:33:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-27 14:33:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 14:33:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-10-27 14:33:21,540 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 121 [2020-10-27 14:33:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:21,540 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-10-27 14:33:21,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:33:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-10-27 14:33:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 14:33:21,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:21,541 INFO L422 BasicCegarLoop]: trace histogram [21, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:21,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:33:21,541 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash 545532474, now seen corresponding path program 35 times [2020-10-27 14:33:21,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:21,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390834463] [2020-10-27 14:33:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:33:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:33:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:27,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:33:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:27,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:33:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:27,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:33:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:33:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:27,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:33:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:33:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 14 proven. 231 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-27 14:33:27,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390834463] [2020-10-27 14:33:27,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:27,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:33:27,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003424543] [2020-10-27 14:33:27,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:33:27,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:27,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:33:27,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:33:27,035 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 25 states. [2020-10-27 14:33:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:27,227 INFO L93 Difference]: Finished difference Result 223 states and 247 transitions. [2020-10-27 14:33:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:33:27,228 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-10-27 14:33:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:27,229 INFO L225 Difference]: With dead ends: 223 [2020-10-27 14:33:27,229 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:33:27,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:33:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:33:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-27 14:33:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 14:33:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2020-10-27 14:33:27,242 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 122 [2020-10-27 14:33:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:27,243 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2020-10-27 14:33:27,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:33:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2020-10-27 14:33:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 14:33:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:27,244 INFO L422 BasicCegarLoop]: trace histogram [22, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:27,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:33:27,244 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash 740348052, now seen corresponding path program 36 times [2020-10-27 14:33:27,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:27,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812551838] [2020-10-27 14:33:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:33:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:33:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:33:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:32,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:33:32,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:33:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:33:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:33:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:33:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 14 proven. 253 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-27 14:33:32,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812551838] [2020-10-27 14:33:32,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:32,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:33:32,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605809797] [2020-10-27 14:33:32,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:33:32,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:33:32,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:33:32,817 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand 26 states. [2020-10-27 14:33:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:32,992 INFO L93 Difference]: Finished difference Result 224 states and 248 transitions. [2020-10-27 14:33:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:33:32,993 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 123 [2020-10-27 14:33:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:32,995 INFO L225 Difference]: With dead ends: 224 [2020-10-27 14:33:32,995 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 14:33:32,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:33:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 14:33:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-10-27 14:33:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 14:33:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2020-10-27 14:33:33,007 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 123 [2020-10-27 14:33:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:33,007 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2020-10-27 14:33:33,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:33:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2020-10-27 14:33:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:33:33,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:33,008 INFO L422 BasicCegarLoop]: trace histogram [23, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:33,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:33:33,008 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1810303622, now seen corresponding path program 37 times [2020-10-27 14:33:33,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:33,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247299718] [2020-10-27 14:33:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 14:33:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:33:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:33:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:33:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:33:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:33:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:33:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:33:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 14 proven. 233 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-10-27 14:33:39,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247299718] [2020-10-27 14:33:39,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:39,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:33:39,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586715476] [2020-10-27 14:33:39,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:33:39,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:39,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:33:39,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:33:39,506 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand 24 states. [2020-10-27 14:33:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:41,771 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2020-10-27 14:33:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:33:41,775 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 124 [2020-10-27 14:33:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:41,776 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:33:41,776 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 14:33:41,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:33:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 14:33:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-10-27 14:33:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-27 14:33:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2020-10-27 14:33:41,790 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 124 [2020-10-27 14:33:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:41,791 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2020-10-27 14:33:41,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:33:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2020-10-27 14:33:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:33:41,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:41,792 INFO L422 BasicCegarLoop]: trace histogram [23, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:41,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:33:41,792 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1907104940, now seen corresponding path program 38 times [2020-10-27 14:33:41,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:41,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509996015] [2020-10-27 14:33:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:46,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 14:33:46,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 14:33:46,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:33:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:33:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:47,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:47,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:33:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:33:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:33:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:33:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:33:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:33:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:33:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:33:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:47,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:47,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:47,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:47,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:47,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 16 proven. 276 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-27 14:33:47,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509996015] [2020-10-27 14:33:47,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:47,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:33:47,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453302836] [2020-10-27 14:33:47,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:33:47,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:33:47,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:33:47,414 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand 27 states. [2020-10-27 14:33:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:47,634 INFO L93 Difference]: Finished difference Result 241 states and 265 transitions. [2020-10-27 14:33:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:33:47,635 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 132 [2020-10-27 14:33:47,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:47,636 INFO L225 Difference]: With dead ends: 241 [2020-10-27 14:33:47,637 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 14:33:47,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:33:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 14:33:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-27 14:33:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:33:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2020-10-27 14:33:47,649 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 132 [2020-10-27 14:33:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:47,649 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2020-10-27 14:33:47,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:33:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2020-10-27 14:33:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:33:47,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:47,650 INFO L422 BasicCegarLoop]: trace histogram [24, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:47,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:33:47,651 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:47,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1799348526, now seen corresponding path program 39 times [2020-10-27 14:33:47,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:47,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088049208] [2020-10-27 14:33:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:47,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 14:33:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:54,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:33:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:54,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:33:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:54,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:33:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:33:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:33:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:33:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:33:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:33:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:54,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:33:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:54,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:54,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 100 proven. 179 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2020-10-27 14:33:54,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088049208] [2020-10-27 14:33:54,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:54,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:33:54,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765485073] [2020-10-27 14:33:54,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:33:54,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:54,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:33:54,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:33:54,482 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand 25 states. [2020-10-27 14:33:56,067 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 14:33:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:56,303 INFO L93 Difference]: Finished difference Result 184 states and 206 transitions. [2020-10-27 14:33:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:33:56,304 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 133 [2020-10-27 14:33:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:56,306 INFO L225 Difference]: With dead ends: 184 [2020-10-27 14:33:56,306 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 14:33:56,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=237, Invalid=1095, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:33:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 14:33:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-10-27 14:33:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:33:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2020-10-27 14:33:56,321 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 133 [2020-10-27 14:33:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:56,322 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2020-10-27 14:33:56,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:33:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2020-10-27 14:33:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 14:33:56,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:56,323 INFO L422 BasicCegarLoop]: trace histogram [24, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:56,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 14:33:56,323 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2009534873, now seen corresponding path program 40 times [2020-10-27 14:33:56,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:56,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294642683] [2020-10-27 14:33:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:34:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:01,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:01,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:34:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:34:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:34:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:34:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:34:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:34:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:34:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:01,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 14:34:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 16 proven. 300 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2020-10-27 14:34:02,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294642683] [2020-10-27 14:34:02,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:02,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:34:02,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098181419] [2020-10-27 14:34:02,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:34:02,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:02,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:34:02,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:34:02,012 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 28 states. [2020-10-27 14:34:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:02,192 INFO L93 Difference]: Finished difference Result 248 states and 274 transitions. [2020-10-27 14:34:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:34:02,193 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 136 [2020-10-27 14:34:02,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:02,194 INFO L225 Difference]: With dead ends: 248 [2020-10-27 14:34:02,194 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 14:34:02,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:34:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 14:34:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-27 14:34:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 14:34:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2020-10-27 14:34:02,208 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 136 [2020-10-27 14:34:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:02,208 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2020-10-27 14:34:02,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:34:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2020-10-27 14:34:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:34:02,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:02,210 INFO L422 BasicCegarLoop]: trace histogram [25, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:02,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-27 14:34:02,210 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:02,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:02,210 INFO L82 PathProgramCache]: Analyzing trace with hash -253857983, now seen corresponding path program 41 times [2020-10-27 14:34:02,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:02,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435182368] [2020-10-27 14:34:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 14:34:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:34:07,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:34:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 14:34:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:34:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:34:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:34:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:34:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:34:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:34:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:34:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:34:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 16 proven. 293 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2020-10-27 14:34:08,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435182368] [2020-10-27 14:34:08,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:08,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:34:08,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226911038] [2020-10-27 14:34:08,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:34:08,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:08,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:34:08,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:34:08,747 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand 26 states. [2020-10-27 14:34:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:11,559 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2020-10-27 14:34:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:34:11,560 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 137 [2020-10-27 14:34:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:11,562 INFO L225 Difference]: With dead ends: 154 [2020-10-27 14:34:11,562 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 14:34:11,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:34:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 14:34:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-10-27 14:34:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 14:34:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-10-27 14:34:11,577 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 137 [2020-10-27 14:34:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:11,578 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-10-27 14:34:11,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:34:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-10-27 14:34:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 14:34:11,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:11,579 INFO L422 BasicCegarLoop]: trace histogram [25, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:11,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-27 14:34:11,580 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash -272456165, now seen corresponding path program 42 times [2020-10-27 14:34:11,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:11,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525575310] [2020-10-27 14:34:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:16,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 14:34:16,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:34:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:34:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:34:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:34:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:34:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:34:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:34:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:34:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:34:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 14:34:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:17,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:17,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:17,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 18 proven. 325 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-27 14:34:17,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525575310] [2020-10-27 14:34:17,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:17,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:34:17,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671167395] [2020-10-27 14:34:17,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:34:17,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:17,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:34:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:34:17,358 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 29 states. [2020-10-27 14:34:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:17,617 INFO L93 Difference]: Finished difference Result 265 states and 291 transitions. [2020-10-27 14:34:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:34:17,618 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 145 [2020-10-27 14:34:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:17,619 INFO L225 Difference]: With dead ends: 265 [2020-10-27 14:34:17,619 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 14:34:17,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:34:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 14:34:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-10-27 14:34:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 14:34:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-10-27 14:34:17,634 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 145 [2020-10-27 14:34:17,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:17,634 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-10-27 14:34:17,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:34:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-10-27 14:34:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 14:34:17,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:17,635 INFO L422 BasicCegarLoop]: trace histogram [26, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:17,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-27 14:34:17,636 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 802650753, now seen corresponding path program 43 times [2020-10-27 14:34:17,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:17,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622993548] [2020-10-27 14:34:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:34:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:34:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:23,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:34:23,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:34:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:34:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:34:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:34:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:34:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:34:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 14:34:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 14:34:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 14:34:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:23,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 18 proven. 351 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-27 14:34:23,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622993548] [2020-10-27 14:34:23,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:23,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:34:23,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596956216] [2020-10-27 14:34:23,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:34:23,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:34:23,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:34:23,385 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 30 states. [2020-10-27 14:34:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:23,642 INFO L93 Difference]: Finished difference Result 266 states and 292 transitions. [2020-10-27 14:34:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:34:23,642 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 146 [2020-10-27 14:34:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:23,644 INFO L225 Difference]: With dead ends: 266 [2020-10-27 14:34:23,644 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 14:34:23,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:34:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 14:34:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-27 14:34:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-27 14:34:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2020-10-27 14:34:23,660 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 146 [2020-10-27 14:34:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:23,660 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2020-10-27 14:34:23,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:34:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2020-10-27 14:34:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 14:34:23,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:23,661 INFO L422 BasicCegarLoop]: trace histogram [27, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:23,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-27 14:34:23,661 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash -228773157, now seen corresponding path program 44 times [2020-10-27 14:34:23,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:23,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060898289] [2020-10-27 14:34:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 14:34:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 14:34:28,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:34:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:34:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:34:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:29,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:34:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:34:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:34:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:34:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:34:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:34:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 14:34:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:34:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:29,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:29,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:29,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 18 proven. 378 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-27 14:34:29,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060898289] [2020-10-27 14:34:29,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:29,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:34:29,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281247203] [2020-10-27 14:34:29,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:34:29,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:34:29,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:34:29,491 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand 31 states. [2020-10-27 14:34:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:29,766 INFO L93 Difference]: Finished difference Result 267 states and 293 transitions. [2020-10-27 14:34:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:34:29,767 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 147 [2020-10-27 14:34:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:29,768 INFO L225 Difference]: With dead ends: 267 [2020-10-27 14:34:29,768 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:34:29,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:34:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:34:29,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-27 14:34:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 14:34:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2020-10-27 14:34:29,784 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 147 [2020-10-27 14:34:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:29,784 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2020-10-27 14:34:29,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:34:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2020-10-27 14:34:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:34:29,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:29,786 INFO L422 BasicCegarLoop]: trace histogram [28, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:29,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-27 14:34:29,786 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:29,786 INFO L82 PathProgramCache]: Analyzing trace with hash -2138143295, now seen corresponding path program 45 times [2020-10-27 14:34:29,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:29,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404749024] [2020-10-27 14:34:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...