/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/pr5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:56:06,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:56:06,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:56:06,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:56:06,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:56:06,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:56:06,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:56:06,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:56:06,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:56:06,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:56:06,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:56:06,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:56:06,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:56:06,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:56:06,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:56:06,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:56:06,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:56:06,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:56:06,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:56:06,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:56:06,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:56:06,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:56:06,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:56:06,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:56:06,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:56:06,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:56:06,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:56:06,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:56:06,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:56:06,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:56:06,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:56:06,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:56:06,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:56:06,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:56:06,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:56:06,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:56:06,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:56:06,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:56:06,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:56:06,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:56:06,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:56:06,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:56:06,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:56:06,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:56:06,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:56:06,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:56:06,950 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:56:06,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:56:06,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:56:06,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:56:06,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:56:06,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:56:06,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:56:06,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:56:06,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:56:06,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:56:06,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:56:06,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:56:06,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:56:06,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:56:06,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:56:06,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:56:06,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:56:06,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:56:06,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:56:06,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:56:06,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:56:06,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:56:06,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:56:06,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:56:06,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:56:06,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:56:07,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:56:07,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:56:07,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:56:07,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:56:07,418 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:56:07,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr5.c [2020-10-26 19:56:07,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deaf411ea/47d8695aee4a4a28b8d604c5653dfd1e/FLAG7e1b11bc6 [2020-10-26 19:56:08,131 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:56:08,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr5.c [2020-10-26 19:56:08,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deaf411ea/47d8695aee4a4a28b8d604c5653dfd1e/FLAG7e1b11bc6 [2020-10-26 19:56:08,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deaf411ea/47d8695aee4a4a28b8d604c5653dfd1e [2020-10-26 19:56:08,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:56:08,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:56:08,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:56:08,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:56:08,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:56:08,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a33f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08, skipping insertion in model container [2020-10-26 19:56:08,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:56:08,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:56:08,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:56:08,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:56:08,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:56:08,871 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:56:08,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08 WrapperNode [2020-10-26 19:56:08,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:56:08,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:56:08,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:56:08,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:56:08,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... [2020-10-26 19:56:08,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:56:08,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:56:08,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:56:08,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:56:08,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:56:09,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:56:09,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:56:09,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:56:09,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:56:09,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:56:09,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:56:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:56:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:56:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:56:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:56:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:56:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:56:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:56:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:56:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:56:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:56:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:56:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:56:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:56:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:56:09,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:56:09,534 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:56:09,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:56:09 BoogieIcfgContainer [2020-10-26 19:56:09,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:56:09,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:56:09,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:56:09,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:56:09,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:56:08" (1/3) ... [2020-10-26 19:56:09,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c07693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:56:09, skipping insertion in model container [2020-10-26 19:56:09,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:08" (2/3) ... [2020-10-26 19:56:09,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c07693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:56:09, skipping insertion in model container [2020-10-26 19:56:09,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:56:09" (3/3) ... [2020-10-26 19:56:09,550 INFO L111 eAbstractionObserver]: Analyzing ICFG pr5.c [2020-10-26 19:56:09,564 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:56:09,570 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:56:09,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:56:09,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:56:09,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:56:09,632 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:56:09,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:56:09,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:56:09,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:56:09,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:56:09,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:56:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-26 19:56:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:56:09,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:09,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:09,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:09,688 INFO L82 PathProgramCache]: Analyzing trace with hash 621617010, now seen corresponding path program 1 times [2020-10-26 19:56:09,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:09,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457866256] [2020-10-26 19:56:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:56:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:56:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1731 [2020-10-26 19:56:11,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 19:56:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 19:56:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:11,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:11,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:56:12,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:12,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457866256] [2020-10-26 19:56:12,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:12,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 19:56:12,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459835962] [2020-10-26 19:56:12,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:56:12,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:56:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:12,054 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-10-26 19:56:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:12,367 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2020-10-26 19:56:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:56:12,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-26 19:56:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:12,379 INFO L225 Difference]: With dead ends: 87 [2020-10-26 19:56:12,379 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 19:56:12,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:56:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 19:56:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-26 19:56:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 19:56:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-10-26 19:56:12,467 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23 [2020-10-26 19:56:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:12,468 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-10-26 19:56:12,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:56:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-10-26 19:56:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 19:56:12,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:12,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:12,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:56:12,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:12,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1785268212, now seen corresponding path program 1 times [2020-10-26 19:56:12,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:12,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197044241] [2020-10-26 19:56:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:56:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-26 19:56:12,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:56:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:13,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:13,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:13,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 19:56:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:13,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197044241] [2020-10-26 19:56:13,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:13,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:56:13,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403087653] [2020-10-26 19:56:13,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:13,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:13,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:13,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:13,120 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 5 states. [2020-10-26 19:56:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:13,345 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2020-10-26 19:56:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:13,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-26 19:56:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:13,350 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:56:13,351 INFO L226 Difference]: Without dead ends: 48 [2020-10-26 19:56:13,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-26 19:56:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-26 19:56:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 19:56:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2020-10-26 19:56:13,378 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 30 [2020-10-26 19:56:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:13,379 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2020-10-26 19:56:13,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2020-10-26 19:56:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 19:56:13,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:13,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:13,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:56:13,382 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:13,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1084203634, now seen corresponding path program 1 times [2020-10-26 19:56:13,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:13,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357565645] [2020-10-26 19:56:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:14,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:14,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:56:14,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-26 19:56:14,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:56:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:14,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 19:56:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:14,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:14,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:14,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:14,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357565645] [2020-10-26 19:56:14,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:14,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:56:14,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397410170] [2020-10-26 19:56:14,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:56:14,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:14,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:56:14,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:56:14,510 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand 9 states. [2020-10-26 19:56:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:14,981 INFO L93 Difference]: Finished difference Result 87 states and 119 transitions. [2020-10-26 19:56:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 19:56:14,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-26 19:56:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:14,984 INFO L225 Difference]: With dead ends: 87 [2020-10-26 19:56:14,984 INFO L226 Difference]: Without dead ends: 75 [2020-10-26 19:56:14,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-26 19:56:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2020-10-26 19:56:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 19:56:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2020-10-26 19:56:14,999 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 30 [2020-10-26 19:56:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:14,999 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2020-10-26 19:56:14,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:56:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2020-10-26 19:56:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 19:56:15,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:15,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:15,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:56:15,001 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1026945332, now seen corresponding path program 1 times [2020-10-26 19:56:15,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:15,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427992735] [2020-10-26 19:56:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:56:15,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-26 19:56:15,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 19:56:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:15,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:15,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:15,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:15,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:15,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:15,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:15,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427992735] [2020-10-26 19:56:15,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:15,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:56:15,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111694617] [2020-10-26 19:56:15,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:56:15,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:56:15,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:56:15,546 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand 10 states. [2020-10-26 19:56:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:15,975 INFO L93 Difference]: Finished difference Result 89 states and 121 transitions. [2020-10-26 19:56:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:56:15,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-26 19:56:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:15,978 INFO L225 Difference]: With dead ends: 89 [2020-10-26 19:56:15,978 INFO L226 Difference]: Without dead ends: 86 [2020-10-26 19:56:15,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-26 19:56:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 58. [2020-10-26 19:56:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 19:56:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-10-26 19:56:15,992 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 30 [2020-10-26 19:56:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:15,992 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-10-26 19:56:15,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:56:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2020-10-26 19:56:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 19:56:15,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:15,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:15,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:56:15,994 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:15,995 INFO L82 PathProgramCache]: Analyzing trace with hash -448146232, now seen corresponding path program 1 times [2020-10-26 19:56:15,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:15,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491011734] [2020-10-26 19:56:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:56:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 19:56:16,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 19:56:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:16,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:16,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:16,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:16,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:16,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:16,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:16,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:16,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491011734] [2020-10-26 19:56:16,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:16,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:56:16,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513791657] [2020-10-26 19:56:16,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:56:16,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:16,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:56:16,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:56:16,386 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand 8 states. [2020-10-26 19:56:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:16,919 INFO L93 Difference]: Finished difference Result 108 states and 145 transitions. [2020-10-26 19:56:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 19:56:16,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-26 19:56:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:16,923 INFO L225 Difference]: With dead ends: 108 [2020-10-26 19:56:16,923 INFO L226 Difference]: Without dead ends: 91 [2020-10-26 19:56:16,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-26 19:56:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-10-26 19:56:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-26 19:56:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2020-10-26 19:56:16,937 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 30 [2020-10-26 19:56:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:16,937 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2020-10-26 19:56:16,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:56:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2020-10-26 19:56:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 19:56:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:16,939 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, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:16,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:56:16,939 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash -677677072, now seen corresponding path program 1 times [2020-10-26 19:56:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:16,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227256789] [2020-10-26 19:56:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:56:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 19:56:17,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-26 19:56:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:17,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:17,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:17,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:17,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:17,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:17,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227256789] [2020-10-26 19:56:17,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:17,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:17,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257622019] [2020-10-26 19:56:17,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:17,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:17,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:17,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:17,092 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand 4 states. [2020-10-26 19:56:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:17,209 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2020-10-26 19:56:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:17,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-26 19:56:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:17,211 INFO L225 Difference]: With dead ends: 92 [2020-10-26 19:56:17,211 INFO L226 Difference]: Without dead ends: 67 [2020-10-26 19:56:17,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-26 19:56:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-26 19:56:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-26 19:56:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-26 19:56:17,223 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 37 [2020-10-26 19:56:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:17,223 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-26 19:56:17,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-26 19:56:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 19:56:17,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:17,225 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:17,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:56:17,225 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:17,226 INFO L82 PathProgramCache]: Analyzing trace with hash -182250762, now seen corresponding path program 1 times [2020-10-26 19:56:17,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:17,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203243105] [2020-10-26 19:56:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:56:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:56:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-26 19:56:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:17,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 19:56:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:17,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:17,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:17,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203243105] [2020-10-26 19:56:17,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:17,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:56:17,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616441840] [2020-10-26 19:56:17,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:17,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:17,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:17,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:17,680 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 5 states. [2020-10-26 19:56:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:17,831 INFO L93 Difference]: Finished difference Result 102 states and 132 transitions. [2020-10-26 19:56:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:17,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-26 19:56:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:17,833 INFO L225 Difference]: With dead ends: 102 [2020-10-26 19:56:17,833 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 19:56:17,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 19:56:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2020-10-26 19:56:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 19:56:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2020-10-26 19:56:17,845 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 37 [2020-10-26 19:56:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:17,845 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-10-26 19:56:17,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2020-10-26 19:56:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 19:56:17,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:17,847 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, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:17,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:56:17,847 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2118571828, now seen corresponding path program 2 times [2020-10-26 19:56:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:17,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000615921] [2020-10-26 19:56:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:56:17,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 19:56:17,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-26 19:56:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:17,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:17,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:17,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000615921] [2020-10-26 19:56:17,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:17,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:17,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118997950] [2020-10-26 19:56:17,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:17,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:17,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:17,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:17,998 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand 4 states. [2020-10-26 19:56:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:18,129 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-10-26 19:56:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:18,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-26 19:56:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:18,131 INFO L225 Difference]: With dead ends: 91 [2020-10-26 19:56:18,131 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 19:56:18,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 19:56:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-10-26 19:56:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 19:56:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-26 19:56:18,141 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 37 [2020-10-26 19:56:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:18,141 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-26 19:56:18,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:18,141 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-26 19:56:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:56:18,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:18,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:18,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:56:18,143 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:18,143 INFO L82 PathProgramCache]: Analyzing trace with hash 608025934, now seen corresponding path program 1 times [2020-10-26 19:56:18,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:18,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439115879] [2020-10-26 19:56:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 19:56:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-26 19:56:18,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 19:56:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:18,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:18,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:18,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:18,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439115879] [2020-10-26 19:56:18,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:18,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:56:18,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177036694] [2020-10-26 19:56:18,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:56:18,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:56:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:56:18,655 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 9 states. [2020-10-26 19:56:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:19,292 INFO L93 Difference]: Finished difference Result 171 states and 236 transitions. [2020-10-26 19:56:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:56:19,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-26 19:56:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:19,294 INFO L225 Difference]: With dead ends: 171 [2020-10-26 19:56:19,295 INFO L226 Difference]: Without dead ends: 154 [2020-10-26 19:56:19,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:56:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-26 19:56:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 76. [2020-10-26 19:56:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 19:56:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-26 19:56:19,318 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 39 [2020-10-26 19:56:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:19,321 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-26 19:56:19,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:56:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-26 19:56:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:56:19,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:19,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:19,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:56:19,327 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1197412400, now seen corresponding path program 1 times [2020-10-26 19:56:19,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:19,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511791864] [2020-10-26 19:56:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 19:56:19,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-26 19:56:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 19:56:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:19,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:19,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:56:19,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511791864] [2020-10-26 19:56:19,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:19,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:56:19,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444120343] [2020-10-26 19:56:19,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:19,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:19,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:19,925 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 5 states. [2020-10-26 19:56:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:20,152 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2020-10-26 19:56:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:20,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-26 19:56:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:20,154 INFO L225 Difference]: With dead ends: 121 [2020-10-26 19:56:20,155 INFO L226 Difference]: Without dead ends: 84 [2020-10-26 19:56:20,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-26 19:56:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-10-26 19:56:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 19:56:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-10-26 19:56:20,175 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 39 [2020-10-26 19:56:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:20,175 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-10-26 19:56:20,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-10-26 19:56:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:56:20,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:20,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:20,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:56:20,177 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash -774710574, now seen corresponding path program 1 times [2020-10-26 19:56:20,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:20,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692312221] [2020-10-26 19:56:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 19:56:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-26 19:56:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 19:56:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:20,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:20,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:20,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:20,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:20,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:20,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:20,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692312221] [2020-10-26 19:56:20,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:20,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:20,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088779384] [2020-10-26 19:56:20,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:20,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:20,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:20,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:20,752 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 11 states. [2020-10-26 19:56:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:21,674 INFO L93 Difference]: Finished difference Result 191 states and 253 transitions. [2020-10-26 19:56:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:56:21,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-26 19:56:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:21,677 INFO L225 Difference]: With dead ends: 191 [2020-10-26 19:56:21,677 INFO L226 Difference]: Without dead ends: 188 [2020-10-26 19:56:21,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:56:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-26 19:56:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2020-10-26 19:56:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-26 19:56:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2020-10-26 19:56:21,698 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 39 [2020-10-26 19:56:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:21,699 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2020-10-26 19:56:21,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2020-10-26 19:56:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 19:56:21,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:21,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:21,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:56:21,701 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash 165582828, now seen corresponding path program 1 times [2020-10-26 19:56:21,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:21,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709969822] [2020-10-26 19:56:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 19:56:22,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:56:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-26 19:56:22,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:22,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:22,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:56:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:22,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:22,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:22,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:56:22,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709969822] [2020-10-26 19:56:22,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:22,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:56:22,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348986011] [2020-10-26 19:56:22,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:22,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:22,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:22,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:22,227 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand 5 states. [2020-10-26 19:56:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:22,387 INFO L93 Difference]: Finished difference Result 176 states and 227 transitions. [2020-10-26 19:56:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:22,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-26 19:56:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:22,389 INFO L225 Difference]: With dead ends: 176 [2020-10-26 19:56:22,390 INFO L226 Difference]: Without dead ends: 139 [2020-10-26 19:56:22,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-26 19:56:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 122. [2020-10-26 19:56:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-26 19:56:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 159 transitions. [2020-10-26 19:56:22,407 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 159 transitions. Word has length 46 [2020-10-26 19:56:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:22,407 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 159 transitions. [2020-10-26 19:56:22,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 159 transitions. [2020-10-26 19:56:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 19:56:22,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:22,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:22,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:56:22,409 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:22,409 INFO L82 PathProgramCache]: Analyzing trace with hash -343890262, now seen corresponding path program 1 times [2020-10-26 19:56:22,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:22,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706436997] [2020-10-26 19:56:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 19:56:22,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 19:56:22,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-26 19:56:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:22,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:22,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:22,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:22,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:22,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:22,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:56:22,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706436997] [2020-10-26 19:56:22,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:22,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:22,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988195390] [2020-10-26 19:56:22,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:22,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:22,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:22,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:22,565 INFO L87 Difference]: Start difference. First operand 122 states and 159 transitions. Second operand 4 states. [2020-10-26 19:56:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:22,709 INFO L93 Difference]: Finished difference Result 165 states and 213 transitions. [2020-10-26 19:56:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:22,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-26 19:56:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:22,712 INFO L225 Difference]: With dead ends: 165 [2020-10-26 19:56:22,712 INFO L226 Difference]: Without dead ends: 128 [2020-10-26 19:56:22,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-26 19:56:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 108. [2020-10-26 19:56:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-26 19:56:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 134 transitions. [2020-10-26 19:56:22,737 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 134 transitions. Word has length 46 [2020-10-26 19:56:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:22,738 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 134 transitions. [2020-10-26 19:56:22,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 134 transitions. [2020-10-26 19:56:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 19:56:22,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:22,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:22,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:56:22,740 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:22,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:22,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1484180326, now seen corresponding path program 2 times [2020-10-26 19:56:22,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:22,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848056734] [2020-10-26 19:56:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 19:56:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 19:56:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-26 19:56:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:22,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:56:22,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848056734] [2020-10-26 19:56:22,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:22,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:22,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037377626] [2020-10-26 19:56:22,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:22,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:22,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:22,946 INFO L87 Difference]: Start difference. First operand 108 states and 134 transitions. Second operand 4 states. [2020-10-26 19:56:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:23,086 INFO L93 Difference]: Finished difference Result 133 states and 163 transitions. [2020-10-26 19:56:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:23,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-26 19:56:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:23,088 INFO L225 Difference]: With dead ends: 133 [2020-10-26 19:56:23,088 INFO L226 Difference]: Without dead ends: 96 [2020-10-26 19:56:23,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-26 19:56:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-10-26 19:56:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-26 19:56:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2020-10-26 19:56:23,102 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 46 [2020-10-26 19:56:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:23,103 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2020-10-26 19:56:23,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2020-10-26 19:56:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-26 19:56:23,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:23,104 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:23,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:56:23,104 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:23,105 INFO L82 PathProgramCache]: Analyzing trace with hash -123573110, now seen corresponding path program 1 times [2020-10-26 19:56:23,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:23,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23991550] [2020-10-26 19:56:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:56:23,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-26 19:56:23,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:56:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:23,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:23,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:23,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:23,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:23,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:23,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:23,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:23,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23991550] [2020-10-26 19:56:23,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:23,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:56:23,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56373653] [2020-10-26 19:56:23,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:56:23,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:56:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:56:23,571 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 10 states. [2020-10-26 19:56:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:24,199 INFO L93 Difference]: Finished difference Result 241 states and 311 transitions. [2020-10-26 19:56:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:56:24,199 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-26 19:56:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:24,201 INFO L225 Difference]: With dead ends: 241 [2020-10-26 19:56:24,202 INFO L226 Difference]: Without dead ends: 224 [2020-10-26 19:56:24,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:56:24,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-26 19:56:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 139. [2020-10-26 19:56:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-26 19:56:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 174 transitions. [2020-10-26 19:56:24,223 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 174 transitions. Word has length 48 [2020-10-26 19:56:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:24,224 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 174 transitions. [2020-10-26 19:56:24,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:56:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 174 transitions. [2020-10-26 19:56:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-26 19:56:24,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:24,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:24,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:56:24,225 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:24,226 INFO L82 PathProgramCache]: Analyzing trace with hash 578026764, now seen corresponding path program 1 times [2020-10-26 19:56:24,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:24,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790038117] [2020-10-26 19:56:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 19:56:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:24,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:24,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:24,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:24,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 19:56:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:24,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 19:56:24,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790038117] [2020-10-26 19:56:24,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:24,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:56:24,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260498951] [2020-10-26 19:56:24,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:24,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:24,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:24,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:24,891 INFO L87 Difference]: Start difference. First operand 139 states and 174 transitions. Second operand 5 states. [2020-10-26 19:56:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:25,098 INFO L93 Difference]: Finished difference Result 194 states and 242 transitions. [2020-10-26 19:56:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:25,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-26 19:56:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:25,100 INFO L225 Difference]: With dead ends: 194 [2020-10-26 19:56:25,101 INFO L226 Difference]: Without dead ends: 152 [2020-10-26 19:56:25,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-26 19:56:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2020-10-26 19:56:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-26 19:56:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2020-10-26 19:56:25,128 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 48 [2020-10-26 19:56:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:25,128 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2020-10-26 19:56:25,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2020-10-26 19:56:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-26 19:56:25,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:25,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:25,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:56:25,129 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash 600659018, now seen corresponding path program 1 times [2020-10-26 19:56:25,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:25,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497537084] [2020-10-26 19:56:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:56:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-26 19:56:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 19:56:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:25,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:25,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:25,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:25,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 19:56:25,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497537084] [2020-10-26 19:56:25,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:25,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:56:25,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811396879] [2020-10-26 19:56:25,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:25,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:25,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:25,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:25,771 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand 5 states. [2020-10-26 19:56:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:25,916 INFO L93 Difference]: Finished difference Result 174 states and 213 transitions. [2020-10-26 19:56:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:25,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-26 19:56:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:25,918 INFO L225 Difference]: With dead ends: 174 [2020-10-26 19:56:25,918 INFO L226 Difference]: Without dead ends: 132 [2020-10-26 19:56:25,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-26 19:56:25,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-26 19:56:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-26 19:56:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 147 transitions. [2020-10-26 19:56:25,939 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 147 transitions. Word has length 48 [2020-10-26 19:56:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:25,939 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 147 transitions. [2020-10-26 19:56:25,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 147 transitions. [2020-10-26 19:56:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-26 19:56:25,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:25,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:25,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:56:25,941 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash 875418632, now seen corresponding path program 1 times [2020-10-26 19:56:25,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:25,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595422255] [2020-10-26 19:56:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:30,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:56:30,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:56:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:56:30,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:56:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:56:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:56:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:31,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:31,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 19:56:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 19:56:31,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595422255] [2020-10-26 19:56:31,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:31,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:31,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494149338] [2020-10-26 19:56:31,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:31,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:31,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:31,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:31,233 INFO L87 Difference]: Start difference. First operand 121 states and 147 transitions. Second operand 11 states. [2020-10-26 19:56:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:31,677 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2020-10-26 19:56:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 19:56:31,677 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-26 19:56:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:31,679 INFO L225 Difference]: With dead ends: 177 [2020-10-26 19:56:31,679 INFO L226 Difference]: Without dead ends: 155 [2020-10-26 19:56:31,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-26 19:56:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-26 19:56:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-26 19:56:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2020-10-26 19:56:31,698 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 48 [2020-10-26 19:56:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:31,698 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2020-10-26 19:56:31,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2020-10-26 19:56:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-26 19:56:31,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:31,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:31,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:56:31,700 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:31,700 INFO L82 PathProgramCache]: Analyzing trace with hash -404445046, now seen corresponding path program 1 times [2020-10-26 19:56:31,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:31,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447566562] [2020-10-26 19:56:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:31,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 19:56:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:32,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:32,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447566562] [2020-10-26 19:56:32,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:32,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:56:32,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972173599] [2020-10-26 19:56:32,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:56:32,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:56:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:56:32,178 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand 12 states. [2020-10-26 19:56:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:32,933 INFO L93 Difference]: Finished difference Result 227 states and 279 transitions. [2020-10-26 19:56:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:56:32,934 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-26 19:56:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:32,936 INFO L225 Difference]: With dead ends: 227 [2020-10-26 19:56:32,936 INFO L226 Difference]: Without dead ends: 224 [2020-10-26 19:56:32,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:56:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-26 19:56:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 166. [2020-10-26 19:56:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-26 19:56:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 203 transitions. [2020-10-26 19:56:32,963 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 203 transitions. Word has length 48 [2020-10-26 19:56:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:32,964 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 203 transitions. [2020-10-26 19:56:32,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:56:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 203 transitions. [2020-10-26 19:56:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 19:56:32,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:32,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:32,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:56:32,966 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1300536884, now seen corresponding path program 1 times [2020-10-26 19:56:32,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:32,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642187046] [2020-10-26 19:56:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-26 19:56:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:33,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:33,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:33,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:33,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 19:56:33,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642187046] [2020-10-26 19:56:33,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:33,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:33,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387702631] [2020-10-26 19:56:33,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:33,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:33,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:33,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:33,115 INFO L87 Difference]: Start difference. First operand 166 states and 203 transitions. Second operand 4 states. [2020-10-26 19:56:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:33,232 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2020-10-26 19:56:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:33,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-26 19:56:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:33,234 INFO L225 Difference]: With dead ends: 226 [2020-10-26 19:56:33,234 INFO L226 Difference]: Without dead ends: 174 [2020-10-26 19:56:33,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-26 19:56:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2020-10-26 19:56:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-26 19:56:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2020-10-26 19:56:33,260 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 55 [2020-10-26 19:56:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:33,260 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2020-10-26 19:56:33,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2020-10-26 19:56:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 19:56:33,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:33,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:33,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:56:33,262 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash -430422288, now seen corresponding path program 2 times [2020-10-26 19:56:33,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:33,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615884282] [2020-10-26 19:56:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-26 19:56:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:33,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:33,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:33,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:33,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:33,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:33,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:33,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 19:56:33,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615884282] [2020-10-26 19:56:33,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:33,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:33,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448203640] [2020-10-26 19:56:33,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:33,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:33,402 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand 4 states. [2020-10-26 19:56:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:33,526 INFO L93 Difference]: Finished difference Result 197 states and 232 transitions. [2020-10-26 19:56:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:33,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-26 19:56:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:33,528 INFO L225 Difference]: With dead ends: 197 [2020-10-26 19:56:33,528 INFO L226 Difference]: Without dead ends: 145 [2020-10-26 19:56:33,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-26 19:56:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2020-10-26 19:56:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-26 19:56:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-10-26 19:56:33,552 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 55 [2020-10-26 19:56:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:33,552 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-10-26 19:56:33,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-10-26 19:56:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 19:56:33,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:33,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:33,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:56:33,554 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:33,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1246306510, now seen corresponding path program 2 times [2020-10-26 19:56:33,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:33,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357945385] [2020-10-26 19:56:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-26 19:56:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:33,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:33,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:56:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:33,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:33,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:33,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:33,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:56:34,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357945385] [2020-10-26 19:56:34,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:34,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:34,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636921961] [2020-10-26 19:56:34,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:34,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:34,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:34,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:34,006 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 11 states. [2020-10-26 19:56:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:35,172 INFO L93 Difference]: Finished difference Result 332 states and 407 transitions. [2020-10-26 19:56:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:56:35,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-26 19:56:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:35,177 INFO L225 Difference]: With dead ends: 332 [2020-10-26 19:56:35,178 INFO L226 Difference]: Without dead ends: 315 [2020-10-26 19:56:35,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:56:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-26 19:56:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 163. [2020-10-26 19:56:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-26 19:56:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 195 transitions. [2020-10-26 19:56:35,211 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 195 transitions. Word has length 57 [2020-10-26 19:56:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:35,211 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 195 transitions. [2020-10-26 19:56:35,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 195 transitions. [2020-10-26 19:56:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 19:56:35,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:35,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:35,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:56:35,213 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -599060656, now seen corresponding path program 1 times [2020-10-26 19:56:35,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:35,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913580904] [2020-10-26 19:56:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 19:56:35,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-26 19:56:35,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:56:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:35,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:35,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:56:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:56:35,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913580904] [2020-10-26 19:56:35,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:35,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:56:35,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823367245] [2020-10-26 19:56:35,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:56:35,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:56:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:35,785 INFO L87 Difference]: Start difference. First operand 163 states and 195 transitions. Second operand 13 states. [2020-10-26 19:56:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:37,445 INFO L93 Difference]: Finished difference Result 379 states and 459 transitions. [2020-10-26 19:56:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:56:37,446 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-26 19:56:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:37,450 INFO L225 Difference]: With dead ends: 379 [2020-10-26 19:56:37,450 INFO L226 Difference]: Without dead ends: 376 [2020-10-26 19:56:37,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 19:56:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-26 19:56:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 208. [2020-10-26 19:56:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-26 19:56:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 252 transitions. [2020-10-26 19:56:37,491 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 252 transitions. Word has length 57 [2020-10-26 19:56:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:37,492 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 252 transitions. [2020-10-26 19:56:37,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:56:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 252 transitions. [2020-10-26 19:56:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-26 19:56:37,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:37,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:37,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:56:37,496 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:37,496 INFO L82 PathProgramCache]: Analyzing trace with hash -183535126, now seen corresponding path program 1 times [2020-10-26 19:56:37,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:37,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982501449] [2020-10-26 19:56:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 19:56:37,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 19:56:37,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 19:56:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:37,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:37,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:37,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-26 19:56:37,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982501449] [2020-10-26 19:56:37,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:37,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:37,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114596812] [2020-10-26 19:56:37,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:37,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:37,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:37,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:37,660 INFO L87 Difference]: Start difference. First operand 208 states and 252 transitions. Second operand 4 states. [2020-10-26 19:56:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:37,802 INFO L93 Difference]: Finished difference Result 266 states and 321 transitions. [2020-10-26 19:56:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:37,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-26 19:56:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:37,805 INFO L225 Difference]: With dead ends: 266 [2020-10-26 19:56:37,805 INFO L226 Difference]: Without dead ends: 214 [2020-10-26 19:56:37,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-26 19:56:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2020-10-26 19:56:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-26 19:56:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 248 transitions. [2020-10-26 19:56:37,846 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 248 transitions. Word has length 64 [2020-10-26 19:56:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:37,846 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 248 transitions. [2020-10-26 19:56:37,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 248 transitions. [2020-10-26 19:56:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-26 19:56:37,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:37,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:37,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:56:37,849 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:37,850 INFO L82 PathProgramCache]: Analyzing trace with hash -704862554, now seen corresponding path program 2 times [2020-10-26 19:56:37,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:37,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821745823] [2020-10-26 19:56:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 19:56:37,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 19:56:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 19:56:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:37,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:37,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:37,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:37,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:38,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-26 19:56:38,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821745823] [2020-10-26 19:56:38,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:38,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:38,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506554413] [2020-10-26 19:56:38,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:38,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:38,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:38,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:38,011 INFO L87 Difference]: Start difference. First operand 208 states and 248 transitions. Second operand 4 states. [2020-10-26 19:56:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:38,168 INFO L93 Difference]: Finished difference Result 251 states and 296 transitions. [2020-10-26 19:56:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:38,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-26 19:56:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:38,170 INFO L225 Difference]: With dead ends: 251 [2020-10-26 19:56:38,170 INFO L226 Difference]: Without dead ends: 199 [2020-10-26 19:56:38,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-26 19:56:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 189. [2020-10-26 19:56:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-26 19:56:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 223 transitions. [2020-10-26 19:56:38,202 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 223 transitions. Word has length 64 [2020-10-26 19:56:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:38,203 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 223 transitions. [2020-10-26 19:56:38,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 223 transitions. [2020-10-26 19:56:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-26 19:56:38,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:38,204 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:38,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:56:38,205 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash -93390582, now seen corresponding path program 3 times [2020-10-26 19:56:38,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:38,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115424558] [2020-10-26 19:56:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 19:56:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-26 19:56:38,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 19:56:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:38,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 19:56:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:38,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:38,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:38,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:38,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:56:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:38,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:38,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:38,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:38,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:38,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115424558] [2020-10-26 19:56:38,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:38,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:56:38,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686241171] [2020-10-26 19:56:38,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:56:38,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:38,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:56:38,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:38,806 INFO L87 Difference]: Start difference. First operand 189 states and 223 transitions. Second operand 13 states. [2020-10-26 19:56:40,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:40,683 INFO L93 Difference]: Finished difference Result 475 states and 568 transitions. [2020-10-26 19:56:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:56:40,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-26 19:56:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:40,687 INFO L225 Difference]: With dead ends: 475 [2020-10-26 19:56:40,687 INFO L226 Difference]: Without dead ends: 472 [2020-10-26 19:56:40,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:56:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-26 19:56:40,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 287. [2020-10-26 19:56:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-26 19:56:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 345 transitions. [2020-10-26 19:56:40,744 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 345 transitions. Word has length 66 [2020-10-26 19:56:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:40,744 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 345 transitions. [2020-10-26 19:56:40,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:56:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 345 transitions. [2020-10-26 19:56:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-26 19:56:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:40,748 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:40,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:56:40,749 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2040137416, now seen corresponding path program 1 times [2020-10-26 19:56:40,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:40,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420289868] [2020-10-26 19:56:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 19:56:41,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-26 19:56:41,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:56:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:41,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:56:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:41,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:41,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420289868] [2020-10-26 19:56:41,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:41,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:41,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621006668] [2020-10-26 19:56:41,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:41,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:41,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:41,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:41,312 INFO L87 Difference]: Start difference. First operand 287 states and 345 transitions. Second operand 11 states. [2020-10-26 19:56:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:42,685 INFO L93 Difference]: Finished difference Result 562 states and 678 transitions. [2020-10-26 19:56:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 19:56:42,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-26 19:56:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:42,689 INFO L225 Difference]: With dead ends: 562 [2020-10-26 19:56:42,689 INFO L226 Difference]: Without dead ends: 545 [2020-10-26 19:56:42,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:56:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-26 19:56:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 369. [2020-10-26 19:56:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-26 19:56:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 451 transitions. [2020-10-26 19:56:42,746 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 451 transitions. Word has length 66 [2020-10-26 19:56:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:42,747 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 451 transitions. [2020-10-26 19:56:42,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 451 transitions. [2020-10-26 19:56:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 19:56:42,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:42,749 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:42,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:56:42,750 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash -146929036, now seen corresponding path program 1 times [2020-10-26 19:56:42,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:42,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342478363] [2020-10-26 19:56:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 19:56:42,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 19:56:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-26 19:56:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:42,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:42,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:42,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:42,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:56:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-26 19:56:42,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342478363] [2020-10-26 19:56:42,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:42,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:42,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886627456] [2020-10-26 19:56:42,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:42,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:42,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:42,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:42,933 INFO L87 Difference]: Start difference. First operand 369 states and 451 transitions. Second operand 4 states. [2020-10-26 19:56:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:43,111 INFO L93 Difference]: Finished difference Result 492 states and 597 transitions. [2020-10-26 19:56:43,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:43,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-26 19:56:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:43,115 INFO L225 Difference]: With dead ends: 492 [2020-10-26 19:56:43,116 INFO L226 Difference]: Without dead ends: 375 [2020-10-26 19:56:43,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-26 19:56:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 369. [2020-10-26 19:56:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-26 19:56:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 443 transitions. [2020-10-26 19:56:43,180 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 443 transitions. Word has length 73 [2020-10-26 19:56:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:43,180 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 443 transitions. [2020-10-26 19:56:43,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 443 transitions. [2020-10-26 19:56:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 19:56:43,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:43,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:43,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:56:43,186 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:43,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1082178352, now seen corresponding path program 2 times [2020-10-26 19:56:43,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:43,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876061037] [2020-10-26 19:56:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 19:56:43,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 19:56:43,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-26 19:56:43,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:56:43,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:43,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:43,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:43,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:56:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:43,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-26 19:56:43,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876061037] [2020-10-26 19:56:43,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:43,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:43,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296576594] [2020-10-26 19:56:43,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:43,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:43,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:43,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:43,351 INFO L87 Difference]: Start difference. First operand 369 states and 443 transitions. Second operand 4 states. [2020-10-26 19:56:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:43,521 INFO L93 Difference]: Finished difference Result 427 states and 505 transitions. [2020-10-26 19:56:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:43,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-26 19:56:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:43,524 INFO L225 Difference]: With dead ends: 427 [2020-10-26 19:56:43,525 INFO L226 Difference]: Without dead ends: 310 [2020-10-26 19:56:43,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-26 19:56:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 298. [2020-10-26 19:56:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 19:56:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 353 transitions. [2020-10-26 19:56:43,581 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 353 transitions. Word has length 73 [2020-10-26 19:56:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:43,582 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 353 transitions. [2020-10-26 19:56:43,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 353 transitions. [2020-10-26 19:56:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-26 19:56:43,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:43,584 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:43,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:56:43,585 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:43,585 INFO L82 PathProgramCache]: Analyzing trace with hash -594369458, now seen corresponding path program 4 times [2020-10-26 19:56:43,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:43,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476804553] [2020-10-26 19:56:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:45,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 19:56:48,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:56:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:56:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:56:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 19:56:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:48,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:48,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:56:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:56:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-26 19:56:48,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476804553] [2020-10-26 19:56:48,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:48,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:56:48,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159523733] [2020-10-26 19:56:48,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:56:48,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:48,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:56:48,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:56:48,895 INFO L87 Difference]: Start difference. First operand 298 states and 353 transitions. Second operand 12 states. [2020-10-26 19:56:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:50,026 INFO L93 Difference]: Finished difference Result 453 states and 528 transitions. [2020-10-26 19:56:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:56:50,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-26 19:56:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:50,030 INFO L225 Difference]: With dead ends: 453 [2020-10-26 19:56:50,030 INFO L226 Difference]: Without dead ends: 436 [2020-10-26 19:56:50,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:56:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-26 19:56:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 298. [2020-10-26 19:56:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 19:56:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 352 transitions. [2020-10-26 19:56:50,094 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 352 transitions. Word has length 75 [2020-10-26 19:56:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:50,094 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 352 transitions. [2020-10-26 19:56:50,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:56:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 352 transitions. [2020-10-26 19:56:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-26 19:56:50,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:50,096 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:50,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:56:50,096 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:50,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1874233136, now seen corresponding path program 5 times [2020-10-26 19:56:50,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:50,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455425301] [2020-10-26 19:56:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:50,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 19:56:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-26 19:56:50,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 19:56:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:56:51,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:56:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 19:56:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:56:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:56:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:56:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:51,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:56:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:51,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455425301] [2020-10-26 19:56:51,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:51,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:56:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101993599] [2020-10-26 19:56:51,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:56:51,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:56:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:51,332 INFO L87 Difference]: Start difference. First operand 298 states and 352 transitions. Second operand 15 states. [2020-10-26 19:56:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:52,283 INFO L93 Difference]: Finished difference Result 592 states and 689 transitions. [2020-10-26 19:56:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:56:52,284 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-26 19:56:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:52,287 INFO L225 Difference]: With dead ends: 592 [2020-10-26 19:56:52,287 INFO L226 Difference]: Without dead ends: 400 [2020-10-26 19:56:52,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:56:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-26 19:56:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 328. [2020-10-26 19:56:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-26 19:56:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 382 transitions. [2020-10-26 19:56:52,360 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 382 transitions. Word has length 75 [2020-10-26 19:56:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:52,361 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 382 transitions. [2020-10-26 19:56:52,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:56:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 382 transitions. [2020-10-26 19:56:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 19:56:52,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:52,364 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:52,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 19:56:52,365 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:52,366 INFO L82 PathProgramCache]: Analyzing trace with hash -989450006, now seen corresponding path program 6 times [2020-10-26 19:56:52,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:52,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680271916] [2020-10-26 19:56:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 19:56:53,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-26 19:56:53,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:56:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 19:56:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:53,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:56:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:56:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:53,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:53,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:53,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 74 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:53,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680271916] [2020-10-26 19:56:53,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:53,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:56:53,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201132600] [2020-10-26 19:56:53,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:56:53,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:53,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:56:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:56:53,342 INFO L87 Difference]: Start difference. First operand 328 states and 382 transitions. Second operand 16 states. [2020-10-26 19:56:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:56,607 INFO L93 Difference]: Finished difference Result 619 states and 710 transitions. [2020-10-26 19:56:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-26 19:56:56,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-26 19:56:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:56,611 INFO L225 Difference]: With dead ends: 619 [2020-10-26 19:56:56,612 INFO L226 Difference]: Without dead ends: 616 [2020-10-26 19:56:56,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=579, Invalid=4113, Unknown=0, NotChecked=0, Total=4692 [2020-10-26 19:56:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-26 19:56:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 387. [2020-10-26 19:56:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-26 19:56:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-10-26 19:56:56,693 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 82 [2020-10-26 19:56:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:56,693 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-10-26 19:56:56,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:56:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-10-26 19:56:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 19:56:56,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:56,695 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:56,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-26 19:56:56,696 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash -584915866, now seen corresponding path program 2 times [2020-10-26 19:56:56,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:56,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382034875] [2020-10-26 19:56:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 19:56:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:56:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:57,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:56:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:56:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:56:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:56:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:57,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:57,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:57,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:57,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 15 proven. 69 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:57,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382034875] [2020-10-26 19:56:57,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:57,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:56:57,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856968157] [2020-10-26 19:56:57,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:56:57,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:57,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:56:57,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:57,476 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 14 states. [2020-10-26 19:57:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:00,878 INFO L93 Difference]: Finished difference Result 659 states and 756 transitions. [2020-10-26 19:57:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-26 19:57:00,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-26 19:57:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:00,883 INFO L225 Difference]: With dead ends: 659 [2020-10-26 19:57:00,883 INFO L226 Difference]: Without dead ends: 642 [2020-10-26 19:57:00,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=859, Invalid=5303, Unknown=0, NotChecked=0, Total=6162 [2020-10-26 19:57:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-26 19:57:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 392. [2020-10-26 19:57:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-26 19:57:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 460 transitions. [2020-10-26 19:57:00,982 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 460 transitions. Word has length 82 [2020-10-26 19:57:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:00,982 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 460 transitions. [2020-10-26 19:57:00,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:57:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 460 transitions. [2020-10-26 19:57:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 19:57:00,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:00,985 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:00,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-26 19:57:00,985 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1821620114, now seen corresponding path program 7 times [2020-10-26 19:57:00,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:00,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432767394] [2020-10-26 19:57:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:03,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 19:57:06,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:57:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 19:57:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:57:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 19:57:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:06,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:06,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:06,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:06,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:06,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:57:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:57:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:06,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 55 proven. 74 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 19:57:06,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432767394] [2020-10-26 19:57:06,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:06,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:06,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132133237] [2020-10-26 19:57:06,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:06,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:06,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:06,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:06,368 INFO L87 Difference]: Start difference. First operand 392 states and 460 transitions. Second operand 17 states. [2020-10-26 19:57:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:08,208 INFO L93 Difference]: Finished difference Result 561 states and 643 transitions. [2020-10-26 19:57:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:57:08,209 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-26 19:57:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:08,212 INFO L225 Difference]: With dead ends: 561 [2020-10-26 19:57:08,212 INFO L226 Difference]: Without dead ends: 544 [2020-10-26 19:57:08,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:57:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-26 19:57:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 392. [2020-10-26 19:57:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-26 19:57:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 459 transitions. [2020-10-26 19:57:08,305 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 459 transitions. Word has length 91 [2020-10-26 19:57:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:08,305 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 459 transitions. [2020-10-26 19:57:08,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 459 transitions. [2020-10-26 19:57:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 19:57:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:08,308 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:08,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-26 19:57:08,308 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:08,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1193483504, now seen corresponding path program 8 times [2020-10-26 19:57:08,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:08,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398847609] [2020-10-26 19:57:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:08,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:08,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 19:57:08,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:08,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-26 19:57:08,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:08,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 19:57:08,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:08,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:08,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:08,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:08,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:08,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:08,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:09,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:09,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:09,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:09,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:09,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:09,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:09,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:09,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:09,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:09,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:09,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:09,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:09,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:09,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:09,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:09,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:09,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:09,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:09,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:09,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 18 proven. 96 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:57:09,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398847609] [2020-10-26 19:57:09,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:09,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:57:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291758811] [2020-10-26 19:57:09,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:57:09,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:57:09,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:57:09,070 INFO L87 Difference]: Start difference. First operand 392 states and 459 transitions. Second operand 15 states. [2020-10-26 19:57:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:12,667 INFO L93 Difference]: Finished difference Result 723 states and 836 transitions. [2020-10-26 19:57:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-26 19:57:12,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-26 19:57:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:12,673 INFO L225 Difference]: With dead ends: 723 [2020-10-26 19:57:12,673 INFO L226 Difference]: Without dead ends: 706 [2020-10-26 19:57:12,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=840, Invalid=5640, Unknown=0, NotChecked=0, Total=6480 [2020-10-26 19:57:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-26 19:57:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 444. [2020-10-26 19:57:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-26 19:57:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 526 transitions. [2020-10-26 19:57:12,785 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 526 transitions. Word has length 91 [2020-10-26 19:57:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:12,785 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 526 transitions. [2020-10-26 19:57:12,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:57:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 526 transitions. [2020-10-26 19:57:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 19:57:12,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:12,788 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:12,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-26 19:57:12,788 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:12,789 INFO L82 PathProgramCache]: Analyzing trace with hash -790067982, now seen corresponding path program 1 times [2020-10-26 19:57:12,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:12,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887151873] [2020-10-26 19:57:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 19:57:17,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:17,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:57:17,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:57:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 19:57:17,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:18,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:18,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:18,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:57:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 75 proven. 39 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:57:18,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887151873] [2020-10-26 19:57:18,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:18,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:18,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610599591] [2020-10-26 19:57:18,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:18,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:18,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:18,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:18,243 INFO L87 Difference]: Start difference. First operand 444 states and 526 transitions. Second operand 17 states. [2020-10-26 19:57:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:19,733 INFO L93 Difference]: Finished difference Result 598 states and 702 transitions. [2020-10-26 19:57:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:57:19,734 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-26 19:57:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:19,737 INFO L225 Difference]: With dead ends: 598 [2020-10-26 19:57:19,737 INFO L226 Difference]: Without dead ends: 546 [2020-10-26 19:57:19,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:57:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-26 19:57:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 442. [2020-10-26 19:57:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-26 19:57:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 519 transitions. [2020-10-26 19:57:19,828 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 519 transitions. Word has length 91 [2020-10-26 19:57:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:19,828 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 519 transitions. [2020-10-26 19:57:19,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 519 transitions. [2020-10-26 19:57:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 19:57:19,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:19,831 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:19,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-26 19:57:19,831 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash -862454540, now seen corresponding path program 2 times [2020-10-26 19:57:19,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:19,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227190076] [2020-10-26 19:57:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:19,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 19:57:20,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-26 19:57:20,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:57:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:20,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 19:57:20,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:20,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:20,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:20,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:20,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:57:20,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227190076] [2020-10-26 19:57:20,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:20,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:20,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850564651] [2020-10-26 19:57:20,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:20,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:20,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:20,665 INFO L87 Difference]: Start difference. First operand 442 states and 519 transitions. Second operand 17 states. [2020-10-26 19:57:24,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:24,231 INFO L93 Difference]: Finished difference Result 694 states and 798 transitions. [2020-10-26 19:57:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-26 19:57:24,232 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-26 19:57:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:24,238 INFO L225 Difference]: With dead ends: 694 [2020-10-26 19:57:24,239 INFO L226 Difference]: Without dead ends: 691 [2020-10-26 19:57:24,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=648, Invalid=4464, Unknown=0, NotChecked=0, Total=5112 [2020-10-26 19:57:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-26 19:57:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 461. [2020-10-26 19:57:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-26 19:57:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 541 transitions. [2020-10-26 19:57:24,336 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 541 transitions. Word has length 91 [2020-10-26 19:57:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:24,336 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 541 transitions. [2020-10-26 19:57:24,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 541 transitions. [2020-10-26 19:57:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 19:57:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:24,339 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:24,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-26 19:57:24,339 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash 517047080, now seen corresponding path program 9 times [2020-10-26 19:57:24,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:24,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761196144] [2020-10-26 19:57:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 19:57:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 128 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:57:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761196144] [2020-10-26 19:57:25,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:25,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:57:25,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464839566] [2020-10-26 19:57:25,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:57:25,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:25,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:57:25,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:57:25,076 INFO L87 Difference]: Start difference. First operand 461 states and 541 transitions. Second operand 16 states. [2020-10-26 19:57:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:29,287 INFO L93 Difference]: Finished difference Result 800 states and 925 transitions. [2020-10-26 19:57:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-26 19:57:29,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-26 19:57:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:29,293 INFO L225 Difference]: With dead ends: 800 [2020-10-26 19:57:29,293 INFO L226 Difference]: Without dead ends: 783 [2020-10-26 19:57:29,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=971, Invalid=6685, Unknown=0, NotChecked=0, Total=7656 [2020-10-26 19:57:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-26 19:57:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 514. [2020-10-26 19:57:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-26 19:57:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 608 transitions. [2020-10-26 19:57:29,409 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 608 transitions. Word has length 100 [2020-10-26 19:57:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:29,409 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 608 transitions. [2020-10-26 19:57:29,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:57:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 608 transitions. [2020-10-26 19:57:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 19:57:29,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:29,412 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:29,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-26 19:57:29,413 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1663333860, now seen corresponding path program 2 times [2020-10-26 19:57:29,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:29,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746294542] [2020-10-26 19:57:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:57:34,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:57:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:57:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-26 19:57:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:34,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:34,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:57:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 76 proven. 18 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-26 19:57:34,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746294542] [2020-10-26 19:57:34,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:34,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:57:34,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779083312] [2020-10-26 19:57:34,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:57:34,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:34,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:57:34,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:57:34,795 INFO L87 Difference]: Start difference. First operand 514 states and 608 transitions. Second operand 13 states. [2020-10-26 19:57:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:35,784 INFO L93 Difference]: Finished difference Result 640 states and 747 transitions. [2020-10-26 19:57:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:57:35,785 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-10-26 19:57:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:35,788 INFO L225 Difference]: With dead ends: 640 [2020-10-26 19:57:35,788 INFO L226 Difference]: Without dead ends: 559 [2020-10-26 19:57:35,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:57:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-26 19:57:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 511. [2020-10-26 19:57:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-26 19:57:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 599 transitions. [2020-10-26 19:57:35,912 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 599 transitions. Word has length 100 [2020-10-26 19:57:35,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:35,913 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 599 transitions. [2020-10-26 19:57:35,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:57:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 599 transitions. [2020-10-26 19:57:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 19:57:35,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:35,916 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:35,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-26 19:57:35,917 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:35,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:35,917 INFO L82 PathProgramCache]: Analyzing trace with hash -365252250, now seen corresponding path program 3 times [2020-10-26 19:57:35,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:35,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935784591] [2020-10-26 19:57:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:40,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:57:40,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:57:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:57:40,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:57:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 19:57:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:41,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:41,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:41,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 52 proven. 96 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 19:57:41,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935784591] [2020-10-26 19:57:41,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:41,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:41,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8994191] [2020-10-26 19:57:41,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:41,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:41,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:41,359 INFO L87 Difference]: Start difference. First operand 511 states and 599 transitions. Second operand 17 states. [2020-10-26 19:57:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:44,538 INFO L93 Difference]: Finished difference Result 694 states and 798 transitions. [2020-10-26 19:57:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-26 19:57:44,539 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2020-10-26 19:57:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:44,543 INFO L225 Difference]: With dead ends: 694 [2020-10-26 19:57:44,544 INFO L226 Difference]: Without dead ends: 677 [2020-10-26 19:57:44,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=580, Invalid=2176, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:57:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-10-26 19:57:44,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 511. [2020-10-26 19:57:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-26 19:57:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 598 transitions. [2020-10-26 19:57:44,678 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 598 transitions. Word has length 100 [2020-10-26 19:57:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:44,678 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 598 transitions. [2020-10-26 19:57:44,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 598 transitions. [2020-10-26 19:57:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 19:57:44,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:44,682 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:44,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-26 19:57:44,682 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:44,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1645115928, now seen corresponding path program 2 times [2020-10-26 19:57:44,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:44,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301324462] [2020-10-26 19:57:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 19:57:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-26 19:57:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:57:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 19:57:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:45,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:45,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:45,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 14 proven. 135 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:57:45,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301324462] [2020-10-26 19:57:45,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:45,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:57:45,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444939653] [2020-10-26 19:57:45,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:57:45,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:57:45,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:57:45,786 INFO L87 Difference]: Start difference. First operand 511 states and 598 transitions. Second operand 18 states. [2020-10-26 19:57:50,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:50,497 INFO L93 Difference]: Finished difference Result 773 states and 888 transitions. [2020-10-26 19:57:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-26 19:57:50,498 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 100 [2020-10-26 19:57:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:50,501 INFO L225 Difference]: With dead ends: 773 [2020-10-26 19:57:50,501 INFO L226 Difference]: Without dead ends: 770 [2020-10-26 19:57:50,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2561 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=904, Invalid=6928, Unknown=0, NotChecked=0, Total=7832 [2020-10-26 19:57:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-10-26 19:57:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 520. [2020-10-26 19:57:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-26 19:57:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 608 transitions. [2020-10-26 19:57:50,618 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 608 transitions. Word has length 100 [2020-10-26 19:57:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:50,619 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 608 transitions. [2020-10-26 19:57:50,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:57:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 608 transitions. [2020-10-26 19:57:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 19:57:50,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:50,621 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:50,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-26 19:57:50,622 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:50,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1106863120, now seen corresponding path program 10 times [2020-10-26 19:57:50,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:50,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967162154] [2020-10-26 19:57:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 19:57:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:51,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:51,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:51,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:57:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:57:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:51,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:57:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:57:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:57:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:57:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:57:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:57:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:51,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:51,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:51,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:51,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 24 proven. 165 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:57:51,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967162154] [2020-10-26 19:57:51,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:51,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:51,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235131109] [2020-10-26 19:57:51,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:51,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:51,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:51,546 INFO L87 Difference]: Start difference. First operand 520 states and 608 transitions. Second operand 17 states. [2020-10-26 19:57:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:57,141 INFO L93 Difference]: Finished difference Result 855 states and 985 transitions. [2020-10-26 19:57:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-10-26 19:57:57,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2020-10-26 19:57:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:57,147 INFO L225 Difference]: With dead ends: 855 [2020-10-26 19:57:57,148 INFO L226 Difference]: Without dead ends: 838 [2020-10-26 19:57:57,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1117, Invalid=8585, Unknown=0, NotChecked=0, Total=9702 [2020-10-26 19:57:57,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-10-26 19:57:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 542. [2020-10-26 19:57:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-26 19:57:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 636 transitions. [2020-10-26 19:57:57,306 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 636 transitions. Word has length 109 [2020-10-26 19:57:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:57,306 INFO L481 AbstractCegarLoop]: Abstraction has 542 states and 636 transitions. [2020-10-26 19:57:57,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 636 transitions. [2020-10-26 19:57:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 19:57:57,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:57,309 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:57,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-26 19:57:57,310 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -631608784, now seen corresponding path program 2 times [2020-10-26 19:57:57,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:57,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377186528] [2020-10-26 19:57:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 19:58:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:58:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:58:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:58:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:58:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:58:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:02,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 104 proven. 30 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-26 19:58:02,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377186528] [2020-10-26 19:58:02,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:02,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:58:02,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132840113] [2020-10-26 19:58:02,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:58:02,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:58:02,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:58:02,694 INFO L87 Difference]: Start difference. First operand 542 states and 636 transitions. Second operand 14 states. [2020-10-26 19:58:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:04,049 INFO L93 Difference]: Finished difference Result 735 states and 850 transitions. [2020-10-26 19:58:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:58:04,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-26 19:58:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:04,054 INFO L225 Difference]: With dead ends: 735 [2020-10-26 19:58:04,054 INFO L226 Difference]: Without dead ends: 673 [2020-10-26 19:58:04,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:58:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-10-26 19:58:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 540. [2020-10-26 19:58:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-26 19:58:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 629 transitions. [2020-10-26 19:58:04,193 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 629 transitions. Word has length 109 [2020-10-26 19:58:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:04,196 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 629 transitions. [2020-10-26 19:58:04,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:58:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 629 transitions. [2020-10-26 19:58:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 19:58:04,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:04,199 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:04,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-26 19:58:04,199 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1634772402, now seen corresponding path program 3 times [2020-10-26 19:58:04,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:04,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423309010] [2020-10-26 19:58:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:04,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:58:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 19:58:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:05,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:58:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:05,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:58:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:05,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:58:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:58:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:58:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 16 proven. 173 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:58:05,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423309010] [2020-10-26 19:58:05,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:05,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:58:05,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137647287] [2020-10-26 19:58:05,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:58:05,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:05,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:58:05,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:58:05,219 INFO L87 Difference]: Start difference. First operand 540 states and 629 transitions. Second operand 19 states. [2020-10-26 19:58:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:11,865 INFO L93 Difference]: Finished difference Result 852 states and 977 transitions. [2020-10-26 19:58:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-26 19:58:11,866 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2020-10-26 19:58:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:11,870 INFO L225 Difference]: With dead ends: 852 [2020-10-26 19:58:11,870 INFO L226 Difference]: Without dead ends: 849 [2020-10-26 19:58:11,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1356, Invalid=10416, Unknown=0, NotChecked=0, Total=11772 [2020-10-26 19:58:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-10-26 19:58:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 569. [2020-10-26 19:58:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-26 19:58:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 663 transitions. [2020-10-26 19:58:12,013 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 663 transitions. Word has length 109 [2020-10-26 19:58:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:12,014 INFO L481 AbstractCegarLoop]: Abstraction has 569 states and 663 transitions. [2020-10-26 19:58:12,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:58:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 663 transitions. [2020-10-26 19:58:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-26 19:58:12,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:12,017 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 6, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:12,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-26 19:58:12,017 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:12,018 INFO L82 PathProgramCache]: Analyzing trace with hash 644670504, now seen corresponding path program 11 times [2020-10-26 19:58:12,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:12,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798645635] [2020-10-26 19:58:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 19:58:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:58:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:58:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:58:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:58:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:58:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:58:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:58:13,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798645635] [2020-10-26 19:58:13,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:13,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:58:13,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104004260] [2020-10-26 19:58:13,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:58:13,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:58:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:58:13,064 INFO L87 Difference]: Start difference. First operand 569 states and 663 transitions. Second operand 19 states. [2020-10-26 19:58:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:20,549 INFO L93 Difference]: Finished difference Result 925 states and 1067 transitions. [2020-10-26 19:58:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-10-26 19:58:20,550 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 118 [2020-10-26 19:58:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:20,555 INFO L225 Difference]: With dead ends: 925 [2020-10-26 19:58:20,555 INFO L226 Difference]: Without dead ends: 922 [2020-10-26 19:58:20,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1288, Invalid=11594, Unknown=0, NotChecked=0, Total=12882 [2020-10-26 19:58:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2020-10-26 19:58:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 643. [2020-10-26 19:58:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-26 19:58:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 754 transitions. [2020-10-26 19:58:20,761 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 754 transitions. Word has length 118 [2020-10-26 19:58:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:20,761 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 754 transitions. [2020-10-26 19:58:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:58:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 754 transitions. [2020-10-26 19:58:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-26 19:58:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:20,765 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:20,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-26 19:58:20,765 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash 804003686, now seen corresponding path program 3 times [2020-10-26 19:58:20,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:20,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378610801] [2020-10-26 19:58:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:20,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 19:58:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:21,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:58:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:58:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:58:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:58:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:58:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:58:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 27 proven. 207 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:58:21,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378610801] [2020-10-26 19:58:21,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:21,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:58:21,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89947879] [2020-10-26 19:58:21,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:58:21,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:21,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:58:21,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:58:21,741 INFO L87 Difference]: Start difference. First operand 643 states and 754 transitions. Second operand 17 states. [2020-10-26 19:58:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:28,188 INFO L93 Difference]: Finished difference Result 939 states and 1083 transitions. [2020-10-26 19:58:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-10-26 19:58:28,189 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 118 [2020-10-26 19:58:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:28,194 INFO L225 Difference]: With dead ends: 939 [2020-10-26 19:58:28,194 INFO L226 Difference]: Without dead ends: 922 [2020-10-26 19:58:28,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3508 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1113, Invalid=9189, Unknown=0, NotChecked=0, Total=10302 [2020-10-26 19:58:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2020-10-26 19:58:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 648. [2020-10-26 19:58:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-26 19:58:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 760 transitions. [2020-10-26 19:58:28,368 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 760 transitions. Word has length 118 [2020-10-26 19:58:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:28,370 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 760 transitions. [2020-10-26 19:58:28,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:58:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 760 transitions. [2020-10-26 19:58:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 19:58:28,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:28,374 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 7, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:28,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-26 19:58:28,374 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -391619856, now seen corresponding path program 12 times [2020-10-26 19:58:28,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:28,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58709941] [2020-10-26 19:58:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 19:58:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:33,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:58:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:33,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:58:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:33,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:33,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:58:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:33,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:58:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:58:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:58:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 19:58:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:33,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:33,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:33,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:33,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 76 proven. 207 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-26 19:58:34,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58709941] [2020-10-26 19:58:34,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:34,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:58:34,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106047916] [2020-10-26 19:58:34,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:58:34,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:34,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:58:34,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:58:34,043 INFO L87 Difference]: Start difference. First operand 648 states and 760 transitions. Second operand 18 states. [2020-10-26 19:58:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:39,845 INFO L93 Difference]: Finished difference Result 900 states and 1038 transitions. [2020-10-26 19:58:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-26 19:58:39,846 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 127 [2020-10-26 19:58:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:39,851 INFO L225 Difference]: With dead ends: 900 [2020-10-26 19:58:39,851 INFO L226 Difference]: Without dead ends: 883 [2020-10-26 19:58:39,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=741, Invalid=4371, Unknown=0, NotChecked=0, Total=5112 [2020-10-26 19:58:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-26 19:58:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 648. [2020-10-26 19:58:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-26 19:58:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 759 transitions. [2020-10-26 19:58:39,998 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 759 transitions. Word has length 127 [2020-10-26 19:58:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:39,998 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 759 transitions. [2020-10-26 19:58:39,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:58:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 759 transitions. [2020-10-26 19:58:40,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 19:58:40,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:40,000 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:40,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-26 19:58:40,001 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:40,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:40,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1671483534, now seen corresponding path program 13 times [2020-10-26 19:58:40,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:40,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980949378] [2020-10-26 19:58:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:40,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 19:58:41,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-26 19:58:41,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:58:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:58:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 19:58:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:58:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-26 19:58:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-26 19:58:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 19:58:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 19:58:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 19:58:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-26 19:58:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-26 19:58:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 19:58:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:41,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:41,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:41,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 275 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:58:41,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980949378] [2020-10-26 19:58:41,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:41,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:58:41,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437798451] [2020-10-26 19:58:41,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:58:41,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:41,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:58:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:58:41,954 INFO L87 Difference]: Start difference. First operand 648 states and 759 transitions. Second operand 19 states. [2020-10-26 19:58:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:43,992 INFO L93 Difference]: Finished difference Result 1316 states and 1527 transitions. [2020-10-26 19:58:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:58:43,993 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 127 [2020-10-26 19:58:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:43,997 INFO L225 Difference]: With dead ends: 1316 [2020-10-26 19:58:43,997 INFO L226 Difference]: Without dead ends: 804 [2020-10-26 19:58:43,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 19:58:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-26 19:58:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 732. [2020-10-26 19:58:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-26 19:58:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 843 transitions. [2020-10-26 19:58:44,149 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 843 transitions. Word has length 127 [2020-10-26 19:58:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:44,149 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 843 transitions. [2020-10-26 19:58:44,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:58:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 843 transitions. [2020-10-26 19:58:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 19:58:44,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:44,153 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:44,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-26 19:58:44,153 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1297748340, now seen corresponding path program 14 times [2020-10-26 19:58:44,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:44,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864494122] [2020-10-26 19:58:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:45,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:45,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 19:58:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-26 19:58:45,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:58:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 19:58:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:58:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:58:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:58:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:58:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:58:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:58:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:58:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:58:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:58:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:58:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 20 proven. 279 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:58:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864494122] [2020-10-26 19:58:46,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:46,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:58:46,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677680121] [2020-10-26 19:58:46,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:58:46,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:46,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:58:46,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:58:46,112 INFO L87 Difference]: Start difference. First operand 732 states and 843 transitions. Second operand 22 states. [2020-10-26 19:59:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:01,192 INFO L93 Difference]: Finished difference Result 1094 states and 1252 transitions. [2020-10-26 19:59:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-10-26 19:59:01,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 134 [2020-10-26 19:59:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:01,199 INFO L225 Difference]: With dead ends: 1094 [2020-10-26 19:59:01,199 INFO L226 Difference]: Without dead ends: 1091 [2020-10-26 19:59:01,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7074 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1865, Invalid=17595, Unknown=0, NotChecked=0, Total=19460 [2020-10-26 19:59:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-10-26 19:59:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 791. [2020-10-26 19:59:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-26 19:59:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 916 transitions. [2020-10-26 19:59:01,374 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 916 transitions. Word has length 134 [2020-10-26 19:59:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:01,375 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 916 transitions. [2020-10-26 19:59:01,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:59:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 916 transitions. [2020-10-26 19:59:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 19:59:01,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:01,378 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:01,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-26 19:59:01,378 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:01,379 INFO L82 PathProgramCache]: Analyzing trace with hash 614391432, now seen corresponding path program 4 times [2020-10-26 19:59:01,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:01,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238143519] [2020-10-26 19:59:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 19:59:02,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-26 19:59:02,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:59:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:59:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 19:59:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:59:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:59:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:59:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:59:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:59:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:59:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:59:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:59:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:59:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:59:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:02,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:02,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:02,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 30 proven. 269 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:59:02,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238143519] [2020-10-26 19:59:02,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:02,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:59:02,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318805428] [2020-10-26 19:59:02,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:59:02,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:02,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:59:02,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:59:02,846 INFO L87 Difference]: Start difference. First operand 791 states and 916 transitions. Second operand 20 states. [2020-10-26 19:59:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:16,703 INFO L93 Difference]: Finished difference Result 1140 states and 1304 transitions. [2020-10-26 19:59:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2020-10-26 19:59:16,706 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 134 [2020-10-26 19:59:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:16,712 INFO L225 Difference]: With dead ends: 1140 [2020-10-26 19:59:16,712 INFO L226 Difference]: Without dead ends: 1123 [2020-10-26 19:59:16,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10031 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2452, Invalid=23308, Unknown=0, NotChecked=0, Total=25760 [2020-10-26 19:59:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-10-26 19:59:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 796. [2020-10-26 19:59:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-10-26 19:59:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 922 transitions. [2020-10-26 19:59:16,942 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 922 transitions. Word has length 134 [2020-10-26 19:59:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:16,944 INFO L481 AbstractCegarLoop]: Abstraction has 796 states and 922 transitions. [2020-10-26 19:59:16,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:59:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 922 transitions. [2020-10-26 19:59:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 19:59:16,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:16,947 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 7, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:16,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-26 19:59:16,947 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:16,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1470808332, now seen corresponding path program 15 times [2020-10-26 19:59:16,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:16,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76525033] [2020-10-26 19:59:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 19:59:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:59:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:59:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:59:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:59:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:22,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:22,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:59:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:59:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:59:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:59:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:59:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:59:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:22,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:59:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:59:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 84 proven. 269 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-26 19:59:22,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76525033] [2020-10-26 19:59:22,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:22,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:59:22,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126824689] [2020-10-26 19:59:22,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:59:22,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:59:22,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:59:22,958 INFO L87 Difference]: Start difference. First operand 796 states and 922 transitions. Second operand 21 states. [2020-10-26 19:59:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:31,513 INFO L93 Difference]: Finished difference Result 1013 states and 1159 transitions. [2020-10-26 19:59:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-26 19:59:31,515 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 143 [2020-10-26 19:59:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:31,519 INFO L225 Difference]: With dead ends: 1013 [2020-10-26 19:59:31,520 INFO L226 Difference]: Without dead ends: 996 [2020-10-26 19:59:31,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=695, Invalid=4135, Unknown=0, NotChecked=0, Total=4830 [2020-10-26 19:59:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-10-26 19:59:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 796. [2020-10-26 19:59:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-10-26 19:59:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 921 transitions. [2020-10-26 19:59:31,662 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 921 transitions. Word has length 143 [2020-10-26 19:59:31,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:31,662 INFO L481 AbstractCegarLoop]: Abstraction has 796 states and 921 transitions. [2020-10-26 19:59:31,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:59:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 921 transitions. [2020-10-26 19:59:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 19:59:31,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:31,665 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:31,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-26 19:59:31,665 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash 190944654, now seen corresponding path program 16 times [2020-10-26 19:59:31,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:31,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359362938] [2020-10-26 19:59:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:31,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:32,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 19:59:32,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-26 19:59:32,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:59:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:59:32,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 19:59:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:59:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:59:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:59:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:59:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:59:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-26 19:59:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-26 19:59:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:59:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-26 19:59:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-26 19:59:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-26 19:59:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 33 proven. 321 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 19:59:33,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359362938] [2020-10-26 19:59:33,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:33,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:59:33,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769360350] [2020-10-26 19:59:33,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:59:33,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:33,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:59:33,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:59:33,224 INFO L87 Difference]: Start difference. First operand 796 states and 921 transitions. Second operand 21 states.