/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:34:53,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:34:53,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:34:53,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:34:53,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:34:53,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:34:53,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:34:53,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:34:53,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:34:53,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:34:53,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:34:53,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:34:53,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:34:53,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:34:53,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:34:53,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:34:53,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:34:53,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:34:53,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:34:53,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:34:53,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:34:53,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:34:53,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:34:53,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:34:53,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:34:53,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:34:53,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:34:53,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:34:53,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:34:53,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:34:53,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:34:53,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:34:53,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:34:53,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:34:53,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:34:53,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:34:53,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:34:53,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:34:53,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:34:53,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:34:53,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:34:53,931 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 [2020-10-29 03:34:53,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:34:53,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:34:53,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:34:53,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:34:53,992 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:34:53,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:34:53,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:34:53,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:34:53,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:34:53,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:34:53,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:34:53,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:34:53,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:34:53,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:34:53,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:34:53,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:34:53,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:34:53,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:34:53,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:34:53,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:34:53,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:34:53,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:53,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:34:53,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:34:53,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:34:53,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:34:53,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:34:53,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:34:53,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:34:53,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:34:54,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:34:54,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:34:54,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:34:54,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:34:54,422 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:34:54,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i [2020-10-29 03:34:54,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5119f8e4a/3ca0a63f8859459aaf4eb36be93bbe97/FLAGc1d9b66ed [2020-10-29 03:34:55,233 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:34:55,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i [2020-10-29 03:34:55,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5119f8e4a/3ca0a63f8859459aaf4eb36be93bbe97/FLAGc1d9b66ed [2020-10-29 03:34:55,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5119f8e4a/3ca0a63f8859459aaf4eb36be93bbe97 [2020-10-29 03:34:55,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:34:55,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:34:55,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:55,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:34:55,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:34:55,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:55,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41614255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55, skipping insertion in model container [2020-10-29 03:34:55,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:55,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:34:55,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:34:55,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:55,876 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:34:55,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:55,983 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:34:55,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55 WrapperNode [2020-10-29 03:34:55,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:55,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:34:55,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:34:55,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:34:56,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (1/1) ... [2020-10-29 03:34:56,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:34:56,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:34:56,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:34:56,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:34:56,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (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 [2020-10-29 03:34:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:34:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:34:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:34:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:34:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:34:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:34:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:34:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:34:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:34:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:34:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:34:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:34:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:34:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:34:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:34:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:34:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:34:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:34:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:34:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:34:56,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:34:56,875 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-29 03:34:56,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:56 BoogieIcfgContainer [2020-10-29 03:34:56,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:34:56,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:34:56,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:34:56,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:34:56,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:34:55" (1/3) ... [2020-10-29 03:34:56,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1791574c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:56, skipping insertion in model container [2020-10-29 03:34:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:55" (2/3) ... [2020-10-29 03:34:56,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1791574c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:56, skipping insertion in model container [2020-10-29 03:34:56,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:56" (3/3) ... [2020-10-29 03:34:56,888 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2020-10-29 03:34:56,901 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:34:56,908 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:34:56,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:34:56,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:34:56,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:34:56,955 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:34:56,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:34:56,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:34:56,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:34:56,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:34:56,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:34:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-29 03:34:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:34:56,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:56,985 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, 1, 1, 1] [2020-10-29 03:34:56,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash -706380544, now seen corresponding path program 1 times [2020-10-29 03:34:57,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:57,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874705439] [2020-10-29 03:34:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:35:00,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:35:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3132 [2020-10-29 03:35:00,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:35:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:35:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:35:00,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 03:35:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:00,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:35:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:00,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:35:00,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874705439] [2020-10-29 03:35:00,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:35:00,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:35:00,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061607629] [2020-10-29 03:35:00,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:35:00,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:00,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:35:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:35:00,495 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-10-29 03:35:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:00,805 INFO L93 Difference]: Finished difference Result 119 states and 183 transitions. [2020-10-29 03:35:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:35:00,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-29 03:35:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:00,816 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:35:00,817 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:35:00,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:35:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:35:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-29 03:35:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:35:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-29 03:35:00,871 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 33 [2020-10-29 03:35:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:00,872 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-29 03:35:00,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:35:00,872 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-29 03:35:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:35:00,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:00,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:00,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:35:00,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:00,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:00,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1631139216, now seen corresponding path program 1 times [2020-10-29 03:35:00,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:00,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027526765] [2020-10-29 03:35:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:35:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:35:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:35:05,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:05,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:35:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:35:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:35:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:06,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:06,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:35:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:06,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:35:06,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027526765] [2020-10-29 03:35:06,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:06,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:35:06,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162390927] [2020-10-29 03:35:06,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:35:06,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:06,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:35:06,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:06,035 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 5 states. [2020-10-29 03:35:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:06,437 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2020-10-29 03:35:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:35:06,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-29 03:35:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:06,440 INFO L225 Difference]: With dead ends: 129 [2020-10-29 03:35:06,440 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:35:06,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:35:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2020-10-29 03:35:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:35:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-29 03:35:06,454 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 51 [2020-10-29 03:35:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:06,454 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-29 03:35:06,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:35:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-29 03:35:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:35:06,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:06,457 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:06,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:35:06,458 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash -168950530, now seen corresponding path program 2 times [2020-10-29 03:35:06,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:06,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716557486] [2020-10-29 03:35:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:06,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:35:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:35:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:11,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:35:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:35:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:35:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:11,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:11,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:11,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:11,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:11,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 03:35:11,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716557486] [2020-10-29 03:35:11,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:11,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:35:11,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794139062] [2020-10-29 03:35:11,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:35:11,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:11,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:35:11,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:35:11,590 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-10-29 03:35:11,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:11,944 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2020-10-29 03:35:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:35:11,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-29 03:35:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:11,946 INFO L225 Difference]: With dead ends: 163 [2020-10-29 03:35:11,946 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:35:11,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:35:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:35:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2020-10-29 03:35:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:35:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2020-10-29 03:35:11,960 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 69 [2020-10-29 03:35:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:11,961 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2020-10-29 03:35:11,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:35:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2020-10-29 03:35:11,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:35:11,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:11,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:11,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:35:11,965 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:11,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1278048268, now seen corresponding path program 3 times [2020-10-29 03:35:11,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:11,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863911572] [2020-10-29 03:35:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:17,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:35:17,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:35:17,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:17,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:35:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:35:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:35:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:17,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:17,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:17,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:35:17,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863911572] [2020-10-29 03:35:17,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:17,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:35:17,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416714150] [2020-10-29 03:35:17,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:35:17,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:17,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:35:17,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:35:17,145 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand 7 states. [2020-10-29 03:35:17,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:17,589 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2020-10-29 03:35:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:35:17,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-29 03:35:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:17,591 INFO L225 Difference]: With dead ends: 197 [2020-10-29 03:35:17,591 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:35:17,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:35:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:35:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-10-29 03:35:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:35:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-10-29 03:35:17,617 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 87 [2020-10-29 03:35:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:17,619 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-10-29 03:35:17,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:35:17,620 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-10-29 03:35:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 03:35:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:17,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:17,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:35:17,627 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash -158858342, now seen corresponding path program 4 times [2020-10-29 03:35:17,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:17,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79473488] [2020-10-29 03:35:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:35:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:35:22,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:22,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:35:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:35:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:22,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:22,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:22,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:22,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:22,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 03:35:22,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79473488] [2020-10-29 03:35:22,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:22,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:35:22,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239006056] [2020-10-29 03:35:22,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:35:22,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:22,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:35:22,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:22,821 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 8 states. [2020-10-29 03:35:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:23,306 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2020-10-29 03:35:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:35:23,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-29 03:35:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:23,308 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:35:23,308 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:35:23,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:35:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2020-10-29 03:35:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:35:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2020-10-29 03:35:23,323 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 105 [2020-10-29 03:35:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:23,323 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2020-10-29 03:35:23,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:35:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2020-10-29 03:35:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 03:35:23,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:23,325 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:23,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:35:23,326 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:23,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1460176808, now seen corresponding path program 5 times [2020-10-29 03:35:23,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:23,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100626564] [2020-10-29 03:35:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:28,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:35:28,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:35:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:28,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:35:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:35:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:35:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:28,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-29 03:35:28,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100626564] [2020-10-29 03:35:28,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:28,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:35:28,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756623371] [2020-10-29 03:35:28,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:35:28,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:28,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:35:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:28,518 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand 9 states. [2020-10-29 03:35:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:28,988 INFO L93 Difference]: Finished difference Result 265 states and 292 transitions. [2020-10-29 03:35:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:35:28,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-10-29 03:35:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:28,991 INFO L225 Difference]: With dead ends: 265 [2020-10-29 03:35:28,991 INFO L226 Difference]: Without dead ends: 156 [2020-10-29 03:35:28,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-29 03:35:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2020-10-29 03:35:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:35:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-10-29 03:35:29,014 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 123 [2020-10-29 03:35:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:29,014 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-10-29 03:35:29,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:35:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-10-29 03:35:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 03:35:29,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:29,018 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:29,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:35:29,019 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:29,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1430133706, now seen corresponding path program 6 times [2020-10-29 03:35:29,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:29,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298750355] [2020-10-29 03:35:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:29,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:34,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 03:35:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 03:35:34,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:34,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:35:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:35:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:35:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:34,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:34,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:34,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:34,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-29 03:35:34,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298750355] [2020-10-29 03:35:34,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:34,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:35:34,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777342431] [2020-10-29 03:35:34,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:35:34,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:34,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:35:34,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:34,283 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 10 states. [2020-10-29 03:35:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:34,925 INFO L93 Difference]: Finished difference Result 299 states and 326 transitions. [2020-10-29 03:35:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:35:34,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-10-29 03:35:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:34,928 INFO L225 Difference]: With dead ends: 299 [2020-10-29 03:35:34,928 INFO L226 Difference]: Without dead ends: 174 [2020-10-29 03:35:34,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-29 03:35:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 165. [2020-10-29 03:35:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:35:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-10-29 03:35:34,942 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 141 [2020-10-29 03:35:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:34,943 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-10-29 03:35:34,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:35:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-10-29 03:35:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 03:35:34,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:34,945 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:34,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:35:34,945 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1473182020, now seen corresponding path program 7 times [2020-10-29 03:35:34,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:34,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547179241] [2020-10-29 03:35:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 03:35:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:35:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:39,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:35:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:35:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:35:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:40,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:40,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:40,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:40,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-29 03:35:40,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547179241] [2020-10-29 03:35:40,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:40,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:35:40,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235254733] [2020-10-29 03:35:40,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:35:40,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:40,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:35:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:40,189 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 11 states. [2020-10-29 03:35:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:40,764 INFO L93 Difference]: Finished difference Result 333 states and 360 transitions. [2020-10-29 03:35:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:35:40,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2020-10-29 03:35:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:40,766 INFO L225 Difference]: With dead ends: 333 [2020-10-29 03:35:40,766 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 03:35:40,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 03:35:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2020-10-29 03:35:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-29 03:35:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2020-10-29 03:35:40,782 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 159 [2020-10-29 03:35:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:40,783 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2020-10-29 03:35:40,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:35:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2020-10-29 03:35:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 03:35:40,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:40,786 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:40,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:35:40,786 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:40,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:40,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1152211246, now seen corresponding path program 8 times [2020-10-29 03:35:40,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:40,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988089792] [2020-10-29 03:35:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:40,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:40,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 03:35:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 03:35:45,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:45,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:35:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 03:35:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:35:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:46,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:46,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:46,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:46,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-10-29 03:35:46,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988089792] [2020-10-29 03:35:46,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:46,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:35:46,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419148134] [2020-10-29 03:35:46,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:35:46,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:46,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:35:46,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:46,071 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 12 states. [2020-10-29 03:35:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:46,854 INFO L93 Difference]: Finished difference Result 367 states and 394 transitions. [2020-10-29 03:35:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:35:46,855 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 177 [2020-10-29 03:35:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:46,859 INFO L225 Difference]: With dead ends: 367 [2020-10-29 03:35:46,859 INFO L226 Difference]: Without dead ends: 210 [2020-10-29 03:35:46,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-29 03:35:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2020-10-29 03:35:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 03:35:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 211 transitions. [2020-10-29 03:35:46,869 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 211 transitions. Word has length 177 [2020-10-29 03:35:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:46,870 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 211 transitions. [2020-10-29 03:35:46,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:35:46,870 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 211 transitions. [2020-10-29 03:35:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-29 03:35:46,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:46,872 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:46,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:35:46,873 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:46,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2004339936, now seen corresponding path program 9 times [2020-10-29 03:35:46,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:46,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486317634] [2020-10-29 03:35:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:51,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:51,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 03:35:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 03:35:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:51,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:35:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:35:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:52,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:52,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:52,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-29 03:35:52,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486317634] [2020-10-29 03:35:52,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:52,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:35:52,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509511908] [2020-10-29 03:35:52,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:35:52,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:35:52,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:52,147 INFO L87 Difference]: Start difference. First operand 201 states and 211 transitions. Second operand 13 states. [2020-10-29 03:35:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:52,801 INFO L93 Difference]: Finished difference Result 401 states and 428 transitions. [2020-10-29 03:35:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:35:52,801 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-10-29 03:35:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:52,804 INFO L225 Difference]: With dead ends: 401 [2020-10-29 03:35:52,804 INFO L226 Difference]: Without dead ends: 228 [2020-10-29 03:35:52,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-29 03:35:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 219. [2020-10-29 03:35:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 03:35:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 229 transitions. [2020-10-29 03:35:52,816 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 229 transitions. Word has length 195 [2020-10-29 03:35:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:52,817 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 229 transitions. [2020-10-29 03:35:52,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:35:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 229 transitions. [2020-10-29 03:35:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 03:35:52,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:52,820 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:52,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:35:52,820 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:52,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1097943918, now seen corresponding path program 10 times [2020-10-29 03:35:52,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:52,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174642820] [2020-10-29 03:35:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 03:35:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 03:35:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:57,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:35:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 03:35:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:35:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:58,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:58,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:58,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:58,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:58,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:58,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:58,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:58,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-10-29 03:35:58,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174642820] [2020-10-29 03:35:58,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:58,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:35:58,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327506853] [2020-10-29 03:35:58,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:35:58,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:58,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:35:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:58,174 INFO L87 Difference]: Start difference. First operand 219 states and 229 transitions. Second operand 14 states. [2020-10-29 03:35:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:58,952 INFO L93 Difference]: Finished difference Result 435 states and 462 transitions. [2020-10-29 03:35:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:35:58,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2020-10-29 03:35:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:58,955 INFO L225 Difference]: With dead ends: 435 [2020-10-29 03:35:58,955 INFO L226 Difference]: Without dead ends: 246 [2020-10-29 03:35:58,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-29 03:35:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2020-10-29 03:35:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-29 03:35:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 247 transitions. [2020-10-29 03:35:58,969 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 247 transitions. Word has length 213 [2020-10-29 03:35:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:58,969 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 247 transitions. [2020-10-29 03:35:58,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:35:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 247 transitions. [2020-10-29 03:35:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 03:35:58,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:58,977 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:58,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:35:58,978 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:58,979 INFO L82 PathProgramCache]: Analyzing trace with hash 796525180, now seen corresponding path program 11 times [2020-10-29 03:35:58,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:58,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217684438] [2020-10-29 03:35:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:59,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:04,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:04,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 03:36:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5215 [2020-10-29 03:36:04,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:04,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:36:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:36:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:36:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:04,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:04,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:04,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-10-29 03:36:04,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217684438] [2020-10-29 03:36:04,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:04,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:36:04,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322942961] [2020-10-29 03:36:04,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:36:04,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:04,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:36:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:36:04,458 INFO L87 Difference]: Start difference. First operand 237 states and 247 transitions. Second operand 15 states. [2020-10-29 03:36:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:05,293 INFO L93 Difference]: Finished difference Result 469 states and 496 transitions. [2020-10-29 03:36:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:36:05,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 231 [2020-10-29 03:36:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:05,297 INFO L225 Difference]: With dead ends: 469 [2020-10-29 03:36:05,297 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 03:36:05,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:36:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 03:36:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2020-10-29 03:36:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-29 03:36:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 265 transitions. [2020-10-29 03:36:05,310 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 265 transitions. Word has length 231 [2020-10-29 03:36:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:05,310 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 265 transitions. [2020-10-29 03:36:05,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:36:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 265 transitions. [2020-10-29 03:36:05,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 03:36:05,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:05,314 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:05,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:36:05,315 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2032872950, now seen corresponding path program 12 times [2020-10-29 03:36:05,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:05,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333095384] [2020-10-29 03:36:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:10,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:10,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:36:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:10,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:10,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:10,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:10,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:10,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:36:10,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:10,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:10,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:10,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:10,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-29 03:36:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333095384] [2020-10-29 03:36:10,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:10,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:36:10,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786691002] [2020-10-29 03:36:10,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:36:10,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:36:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:36:10,746 INFO L87 Difference]: Start difference. First operand 255 states and 265 transitions. Second operand 16 states. [2020-10-29 03:36:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:11,695 INFO L93 Difference]: Finished difference Result 503 states and 530 transitions. [2020-10-29 03:36:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:36:11,696 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 249 [2020-10-29 03:36:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:11,698 INFO L225 Difference]: With dead ends: 503 [2020-10-29 03:36:11,698 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 03:36:11,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:36:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 03:36:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2020-10-29 03:36:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 03:36:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 283 transitions. [2020-10-29 03:36:11,721 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 283 transitions. Word has length 249 [2020-10-29 03:36:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:11,722 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 283 transitions. [2020-10-29 03:36:11,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:36:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 283 transitions. [2020-10-29 03:36:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 03:36:11,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:11,726 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:11,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:36:11,727 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash 164403736, now seen corresponding path program 13 times [2020-10-29 03:36:11,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:11,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522138461] [2020-10-29 03:36:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:16,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:36:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:17,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:17,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-10-29 03:36:17,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522138461] [2020-10-29 03:36:17,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:17,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:36:17,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310773638] [2020-10-29 03:36:17,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:36:17,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:36:17,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:36:17,165 INFO L87 Difference]: Start difference. First operand 273 states and 283 transitions. Second operand 17 states. [2020-10-29 03:36:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:18,118 INFO L93 Difference]: Finished difference Result 537 states and 564 transitions. [2020-10-29 03:36:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:36:18,118 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 267 [2020-10-29 03:36:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:18,121 INFO L225 Difference]: With dead ends: 537 [2020-10-29 03:36:18,122 INFO L226 Difference]: Without dead ends: 300 [2020-10-29 03:36:18,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:36:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-29 03:36:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 291. [2020-10-29 03:36:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-29 03:36:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 301 transitions. [2020-10-29 03:36:18,137 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 301 transitions. Word has length 267 [2020-10-29 03:36:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:18,137 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 301 transitions. [2020-10-29 03:36:18,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:36:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 301 transitions. [2020-10-29 03:36:18,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-29 03:36:18,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:18,142 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:18,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:36:18,142 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:18,143 INFO L82 PathProgramCache]: Analyzing trace with hash -978044250, now seen corresponding path program 14 times [2020-10-29 03:36:18,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:18,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671897175] [2020-10-29 03:36:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:18,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5343 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:36:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:23,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:23,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:23,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-10-29 03:36:23,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671897175] [2020-10-29 03:36:23,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:23,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:36:23,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587221348] [2020-10-29 03:36:23,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:36:23,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:36:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:23,834 INFO L87 Difference]: Start difference. First operand 291 states and 301 transitions. Second operand 18 states. [2020-10-29 03:36:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:24,841 INFO L93 Difference]: Finished difference Result 571 states and 598 transitions. [2020-10-29 03:36:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:36:24,842 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-10-29 03:36:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:24,845 INFO L225 Difference]: With dead ends: 571 [2020-10-29 03:36:24,845 INFO L226 Difference]: Without dead ends: 318 [2020-10-29 03:36:24,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-29 03:36:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 309. [2020-10-29 03:36:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-29 03:36:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 319 transitions. [2020-10-29 03:36:24,859 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 319 transitions. Word has length 285 [2020-10-29 03:36:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:24,860 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 319 transitions. [2020-10-29 03:36:24,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:36:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 319 transitions. [2020-10-29 03:36:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 03:36:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:24,862 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:24,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:36:24,862 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:24,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1625723828, now seen corresponding path program 15 times [2020-10-29 03:36:24,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:24,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761997252] [2020-10-29 03:36:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:25,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 03:36:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5335 [2020-10-29 03:36:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:30,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:36:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-29 03:36:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:36:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-10-29 03:36:30,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761997252] [2020-10-29 03:36:30,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:30,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:36:30,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128978185] [2020-10-29 03:36:30,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:36:30,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:30,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:36:30,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:30,589 INFO L87 Difference]: Start difference. First operand 309 states and 319 transitions. Second operand 19 states. [2020-10-29 03:36:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:31,592 INFO L93 Difference]: Finished difference Result 605 states and 632 transitions. [2020-10-29 03:36:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:36:31,593 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 303 [2020-10-29 03:36:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:31,596 INFO L225 Difference]: With dead ends: 605 [2020-10-29 03:36:31,596 INFO L226 Difference]: Without dead ends: 336 [2020-10-29 03:36:31,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:31,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-29 03:36:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 327. [2020-10-29 03:36:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-29 03:36:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 337 transitions. [2020-10-29 03:36:31,616 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 337 transitions. Word has length 303 [2020-10-29 03:36:31,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:31,617 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 337 transitions. [2020-10-29 03:36:31,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:36:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 337 transitions. [2020-10-29 03:36:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 03:36:31,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:31,619 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:31,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:36:31,620 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:31,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash -389642942, now seen corresponding path program 16 times [2020-10-29 03:36:31,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:31,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073397123] [2020-10-29 03:36:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:36,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:36,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 03:36:36,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:36:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:36,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:36,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:36,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:37,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-10-29 03:36:37,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073397123] [2020-10-29 03:36:37,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:37,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:36:37,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244799574] [2020-10-29 03:36:37,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:36:37,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:37,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:36:37,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:37,050 INFO L87 Difference]: Start difference. First operand 327 states and 337 transitions. Second operand 20 states. [2020-10-29 03:36:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:38,174 INFO L93 Difference]: Finished difference Result 639 states and 666 transitions. [2020-10-29 03:36:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:36:38,174 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 321 [2020-10-29 03:36:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:38,177 INFO L225 Difference]: With dead ends: 639 [2020-10-29 03:36:38,177 INFO L226 Difference]: Without dead ends: 354 [2020-10-29 03:36:38,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-29 03:36:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 345. [2020-10-29 03:36:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-29 03:36:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2020-10-29 03:36:38,192 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 321 [2020-10-29 03:36:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:38,192 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2020-10-29 03:36:38,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:36:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2020-10-29 03:36:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 03:36:38,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:38,195 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:38,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:36:38,196 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash 532606800, now seen corresponding path program 17 times [2020-10-29 03:36:38,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:38,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106708603] [2020-10-29 03:36:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-29 03:36:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6252 [2020-10-29 03:36:44,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:44,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:36:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:36:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:36:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:44,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:44,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-10-29 03:36:44,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106708603] [2020-10-29 03:36:44,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:44,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:36:44,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222573268] [2020-10-29 03:36:44,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:36:44,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:44,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:36:44,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:44,890 INFO L87 Difference]: Start difference. First operand 345 states and 355 transitions. Second operand 21 states. [2020-10-29 03:36:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:45,897 INFO L93 Difference]: Finished difference Result 673 states and 700 transitions. [2020-10-29 03:36:45,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:36:45,897 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 339 [2020-10-29 03:36:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:45,901 INFO L225 Difference]: With dead ends: 673 [2020-10-29 03:36:45,901 INFO L226 Difference]: Without dead ends: 372 [2020-10-29 03:36:45,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-29 03:36:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2020-10-29 03:36:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-29 03:36:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 373 transitions. [2020-10-29 03:36:45,915 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 373 transitions. Word has length 339 [2020-10-29 03:36:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:45,916 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 373 transitions. [2020-10-29 03:36:45,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:36:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 373 transitions. [2020-10-29 03:36:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 03:36:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:45,918 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:45,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:36:45,919 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:45,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1262662110, now seen corresponding path program 18 times [2020-10-29 03:36:45,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:45,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961703932] [2020-10-29 03:36:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:51,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-29 03:36:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5265 [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:36:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:51,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:51,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:51,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:51,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:51,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:51,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-10-29 03:36:51,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961703932] [2020-10-29 03:36:51,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:51,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:36:51,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513862837] [2020-10-29 03:36:51,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:36:51,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:36:51,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:51,730 INFO L87 Difference]: Start difference. First operand 363 states and 373 transitions. Second operand 22 states. [2020-10-29 03:36:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:52,899 INFO L93 Difference]: Finished difference Result 707 states and 734 transitions. [2020-10-29 03:36:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:36:52,900 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 357 [2020-10-29 03:36:52,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:52,902 INFO L225 Difference]: With dead ends: 707 [2020-10-29 03:36:52,902 INFO L226 Difference]: Without dead ends: 390 [2020-10-29 03:36:52,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-29 03:36:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 381. [2020-10-29 03:36:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-29 03:36:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 391 transitions. [2020-10-29 03:36:52,935 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 391 transitions. Word has length 357 [2020-10-29 03:36:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:52,935 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 391 transitions. [2020-10-29 03:36:52,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:36:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 391 transitions. [2020-10-29 03:36:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-29 03:36:52,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:52,944 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:36:52,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:36:52,945 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2117292820, now seen corresponding path program 19 times [2020-10-29 03:36:52,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:52,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458740247] [2020-10-29 03:36:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:36:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:58,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:58,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:58,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:58,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:58,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:58,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-10-29 03:36:58,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458740247] [2020-10-29 03:36:58,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:58,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:36:58,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117254599] [2020-10-29 03:36:58,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:36:58,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:58,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:36:58,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:58,729 INFO L87 Difference]: Start difference. First operand 381 states and 391 transitions. Second operand 23 states. [2020-10-29 03:37:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:00,017 INFO L93 Difference]: Finished difference Result 741 states and 768 transitions. [2020-10-29 03:37:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:37:00,018 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 375 [2020-10-29 03:37:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:00,020 INFO L225 Difference]: With dead ends: 741 [2020-10-29 03:37:00,021 INFO L226 Difference]: Without dead ends: 408 [2020-10-29 03:37:00,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:37:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-29 03:37:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 399. [2020-10-29 03:37:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-29 03:37:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 409 transitions. [2020-10-29 03:37:00,037 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 409 transitions. Word has length 375 [2020-10-29 03:37:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:00,037 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 409 transitions. [2020-10-29 03:37:00,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:37:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 409 transitions. [2020-10-29 03:37:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-29 03:37:00,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:00,041 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:00,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:37:00,042 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:00,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2027929722, now seen corresponding path program 20 times [2020-10-29 03:37:00,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:00,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920132681] [2020-10-29 03:37:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:05,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-29 03:37:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5592 [2020-10-29 03:37:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:05,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:37:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-29 03:37:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:37:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:06,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:06,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:06,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:06,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-10-29 03:37:06,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920132681] [2020-10-29 03:37:06,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:06,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:37:06,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466926064] [2020-10-29 03:37:06,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:37:06,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:06,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:37:06,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:37:06,388 INFO L87 Difference]: Start difference. First operand 399 states and 409 transitions. Second operand 24 states. [2020-10-29 03:37:07,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:07,723 INFO L93 Difference]: Finished difference Result 775 states and 802 transitions. [2020-10-29 03:37:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:37:07,724 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 393 [2020-10-29 03:37:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:07,727 INFO L225 Difference]: With dead ends: 775 [2020-10-29 03:37:07,727 INFO L226 Difference]: Without dead ends: 426 [2020-10-29 03:37:07,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:37:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-29 03:37:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 417. [2020-10-29 03:37:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-29 03:37:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 427 transitions. [2020-10-29 03:37:07,746 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 427 transitions. Word has length 393 [2020-10-29 03:37:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:07,746 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 427 transitions. [2020-10-29 03:37:07,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:37:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 427 transitions. [2020-10-29 03:37:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-29 03:37:07,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:07,749 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:07,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:37:07,750 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:07,750 INFO L82 PathProgramCache]: Analyzing trace with hash -754529144, now seen corresponding path program 21 times [2020-10-29 03:37:07,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:07,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146905451] [2020-10-29 03:37:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:13,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:13,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5663 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:37:13,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-10-29 03:37:14,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146905451] [2020-10-29 03:37:14,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:14,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:37:14,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934461592] [2020-10-29 03:37:14,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:37:14,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:14,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:37:14,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:37:14,093 INFO L87 Difference]: Start difference. First operand 417 states and 427 transitions. Second operand 25 states. [2020-10-29 03:37:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:15,558 INFO L93 Difference]: Finished difference Result 809 states and 836 transitions. [2020-10-29 03:37:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:37:15,562 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 411 [2020-10-29 03:37:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:15,565 INFO L225 Difference]: With dead ends: 809 [2020-10-29 03:37:15,565 INFO L226 Difference]: Without dead ends: 444 [2020-10-29 03:37:15,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:37:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-29 03:37:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 435. [2020-10-29 03:37:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-29 03:37:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 445 transitions. [2020-10-29 03:37:15,585 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 445 transitions. Word has length 411 [2020-10-29 03:37:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:15,585 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 445 transitions. [2020-10-29 03:37:15,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:37:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 445 transitions. [2020-10-29 03:37:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-29 03:37:15,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:15,590 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:15,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:37:15,590 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:15,591 INFO L82 PathProgramCache]: Analyzing trace with hash -304828138, now seen corresponding path program 22 times [2020-10-29 03:37:15,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:15,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161731810] [2020-10-29 03:37:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:15,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5236 [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:37:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 03:37:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:37:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:21,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:21,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-10-29 03:37:21,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161731810] [2020-10-29 03:37:21,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:21,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:37:21,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063539576] [2020-10-29 03:37:21,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:37:21,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:21,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:37:21,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:21,512 INFO L87 Difference]: Start difference. First operand 435 states and 445 transitions. Second operand 26 states. [2020-10-29 03:37:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:22,958 INFO L93 Difference]: Finished difference Result 843 states and 870 transitions. [2020-10-29 03:37:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:37:22,959 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 429 [2020-10-29 03:37:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:22,963 INFO L225 Difference]: With dead ends: 843 [2020-10-29 03:37:22,963 INFO L226 Difference]: Without dead ends: 462 [2020-10-29 03:37:22,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-29 03:37:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 453. [2020-10-29 03:37:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-29 03:37:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 463 transitions. [2020-10-29 03:37:22,978 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 463 transitions. Word has length 429 [2020-10-29 03:37:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:22,978 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 463 transitions. [2020-10-29 03:37:22,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:37:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 463 transitions. [2020-10-29 03:37:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-29 03:37:22,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:22,982 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:22,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:37:22,982 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash 803491364, now seen corresponding path program 23 times [2020-10-29 03:37:22,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:22,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171060226] [2020-10-29 03:37:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5600 [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:37:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 03:37:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:37:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-10-29 03:37:29,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171060226] [2020-10-29 03:37:29,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:29,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:37:29,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943319665] [2020-10-29 03:37:29,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:37:29,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:29,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:37:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:29,283 INFO L87 Difference]: Start difference. First operand 453 states and 463 transitions. Second operand 27 states. [2020-10-29 03:37:30,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:30,881 INFO L93 Difference]: Finished difference Result 877 states and 904 transitions. [2020-10-29 03:37:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:37:30,883 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 447 [2020-10-29 03:37:30,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:30,887 INFO L225 Difference]: With dead ends: 877 [2020-10-29 03:37:30,887 INFO L226 Difference]: Without dead ends: 480 [2020-10-29 03:37:30,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-29 03:37:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 471. [2020-10-29 03:37:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-29 03:37:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 481 transitions. [2020-10-29 03:37:30,900 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 481 transitions. Word has length 447 [2020-10-29 03:37:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:30,901 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 481 transitions. [2020-10-29 03:37:30,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:37:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 481 transitions. [2020-10-29 03:37:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-29 03:37:30,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:30,904 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:30,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:37:30,905 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:30,905 INFO L82 PathProgramCache]: Analyzing trace with hash -690453582, now seen corresponding path program 24 times [2020-10-29 03:37:30,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:30,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455477379] [2020-10-29 03:37:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5175 [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:37:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 03:37:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:37:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:36,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-10-29 03:37:36,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455477379] [2020-10-29 03:37:36,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:36,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:37:36,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123030379] [2020-10-29 03:37:36,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:37:36,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:36,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:37:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:36,885 INFO L87 Difference]: Start difference. First operand 471 states and 481 transitions. Second operand 28 states. [2020-10-29 03:37:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:38,568 INFO L93 Difference]: Finished difference Result 911 states and 938 transitions. [2020-10-29 03:37:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:37:38,568 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 465 [2020-10-29 03:37:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:38,571 INFO L225 Difference]: With dead ends: 911 [2020-10-29 03:37:38,571 INFO L226 Difference]: Without dead ends: 498 [2020-10-29 03:37:38,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-29 03:37:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 489. [2020-10-29 03:37:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-29 03:37:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 499 transitions. [2020-10-29 03:37:38,586 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 499 transitions. Word has length 465 [2020-10-29 03:37:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:38,587 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 499 transitions. [2020-10-29 03:37:38,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:37:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 499 transitions. [2020-10-29 03:37:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-29 03:37:38,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:38,591 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:38,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:37:38,591 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1163669952, now seen corresponding path program 25 times [2020-10-29 03:37:38,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:38,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854161383] [2020-10-29 03:37:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:44,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:44,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-29 03:37:44,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:44,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5890 [2020-10-29 03:37:44,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:44,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:37:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-29 03:37:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:37:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-10-29 03:37:45,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854161383] [2020-10-29 03:37:45,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:45,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:37:45,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895001022] [2020-10-29 03:37:45,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:37:45,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:45,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:37:45,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:45,334 INFO L87 Difference]: Start difference. First operand 489 states and 499 transitions. Second operand 29 states. [2020-10-29 03:37:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:46,900 INFO L93 Difference]: Finished difference Result 945 states and 972 transitions. [2020-10-29 03:37:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:37:46,900 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 483 [2020-10-29 03:37:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:46,904 INFO L225 Difference]: With dead ends: 945 [2020-10-29 03:37:46,904 INFO L226 Difference]: Without dead ends: 516 [2020-10-29 03:37:46,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-29 03:37:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 507. [2020-10-29 03:37:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-29 03:37:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 517 transitions. [2020-10-29 03:37:46,918 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 517 transitions. Word has length 483 [2020-10-29 03:37:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:46,919 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 517 transitions. [2020-10-29 03:37:46,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:37:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 517 transitions. [2020-10-29 03:37:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-29 03:37:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:46,923 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:46,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:37:46,924 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash -786286514, now seen corresponding path program 26 times [2020-10-29 03:37:46,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:46,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913979831] [2020-10-29 03:37:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:52,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-29 03:37:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5297 [2020-10-29 03:37:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:52,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:37:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:37:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:52,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-10-29 03:37:53,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913979831] [2020-10-29 03:37:53,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:53,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:37:53,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603688866] [2020-10-29 03:37:53,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:37:53,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:53,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:37:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:53,140 INFO L87 Difference]: Start difference. First operand 507 states and 517 transitions. Second operand 30 states. [2020-10-29 03:37:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:54,922 INFO L93 Difference]: Finished difference Result 979 states and 1006 transitions. [2020-10-29 03:37:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:37:54,922 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 501 [2020-10-29 03:37:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:54,926 INFO L225 Difference]: With dead ends: 979 [2020-10-29 03:37:54,926 INFO L226 Difference]: Without dead ends: 534 [2020-10-29 03:37:54,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-29 03:37:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 525. [2020-10-29 03:37:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-29 03:37:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 535 transitions. [2020-10-29 03:37:54,941 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 535 transitions. Word has length 501 [2020-10-29 03:37:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:54,941 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 535 transitions. [2020-10-29 03:37:54,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:37:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 535 transitions. [2020-10-29 03:37:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-29 03:37:54,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:54,945 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:37:54,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:37:54,946 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:54,946 INFO L82 PathProgramCache]: Analyzing trace with hash 283473756, now seen corresponding path program 27 times [2020-10-29 03:37:54,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:54,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232332430] [2020-10-29 03:37:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11757 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-29 03:38:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:38:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:07,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:07,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:07,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:07,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:07,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:07,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:07,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:07,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-10-29 03:38:07,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232332430] [2020-10-29 03:38:07,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:07,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:38:07,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683561310] [2020-10-29 03:38:07,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:38:07,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:38:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:38:07,615 INFO L87 Difference]: Start difference. First operand 525 states and 535 transitions. Second operand 31 states. [2020-10-29 03:38:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:09,408 INFO L93 Difference]: Finished difference Result 1013 states and 1040 transitions. [2020-10-29 03:38:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:38:09,409 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 519 [2020-10-29 03:38:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:09,413 INFO L225 Difference]: With dead ends: 1013 [2020-10-29 03:38:09,413 INFO L226 Difference]: Without dead ends: 552 [2020-10-29 03:38:09,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:38:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-29 03:38:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 543. [2020-10-29 03:38:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-29 03:38:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 553 transitions. [2020-10-29 03:38:09,428 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 553 transitions. Word has length 519 [2020-10-29 03:38:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:09,429 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 553 transitions. [2020-10-29 03:38:09,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:38:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 553 transitions. [2020-10-29 03:38:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 03:38:09,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:09,434 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:09,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:38:09,434 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1435971862, now seen corresponding path program 28 times [2020-10-29 03:38:09,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:09,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863474365] [2020-10-29 03:38:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:09,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-29 03:38:14,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5233 [2020-10-29 03:38:14,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:14,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:38:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:38:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:38:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:15,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-10-29 03:38:15,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863474365] [2020-10-29 03:38:15,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:15,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:38:15,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877366089] [2020-10-29 03:38:15,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:38:15,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:38:15,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:15,626 INFO L87 Difference]: Start difference. First operand 543 states and 553 transitions. Second operand 32 states. [2020-10-29 03:38:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:17,468 INFO L93 Difference]: Finished difference Result 1047 states and 1074 transitions. [2020-10-29 03:38:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:38:17,469 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 537 [2020-10-29 03:38:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:17,472 INFO L225 Difference]: With dead ends: 1047 [2020-10-29 03:38:17,473 INFO L226 Difference]: Without dead ends: 570 [2020-10-29 03:38:17,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-10-29 03:38:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 561. [2020-10-29 03:38:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-29 03:38:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 571 transitions. [2020-10-29 03:38:17,489 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 571 transitions. Word has length 537 [2020-10-29 03:38:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:17,489 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 571 transitions. [2020-10-29 03:38:17,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:38:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 571 transitions. [2020-10-29 03:38:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-29 03:38:17,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:17,495 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:17,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:38:17,495 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:17,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1602806024, now seen corresponding path program 29 times [2020-10-29 03:38:17,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:17,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353445677] [2020-10-29 03:38:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13831 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:38:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:32,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-10-29 03:38:32,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353445677] [2020-10-29 03:38:32,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:32,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:38:32,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449976462] [2020-10-29 03:38:32,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:38:32,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:32,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:38:32,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:32,373 INFO L87 Difference]: Start difference. First operand 561 states and 571 transitions. Second operand 33 states. [2020-10-29 03:38:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:34,440 INFO L93 Difference]: Finished difference Result 1081 states and 1108 transitions. [2020-10-29 03:38:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:38:34,441 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 555 [2020-10-29 03:38:34,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:34,445 INFO L225 Difference]: With dead ends: 1081 [2020-10-29 03:38:34,445 INFO L226 Difference]: Without dead ends: 588 [2020-10-29 03:38:34,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-29 03:38:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 579. [2020-10-29 03:38:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-29 03:38:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 589 transitions. [2020-10-29 03:38:34,463 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 589 transitions. Word has length 555 [2020-10-29 03:38:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:34,463 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 589 transitions. [2020-10-29 03:38:34,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:38:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 589 transitions. [2020-10-29 03:38:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-29 03:38:34,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:34,469 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:34,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:38:34,469 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:34,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash 551765894, now seen corresponding path program 30 times [2020-10-29 03:38:34,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:34,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137239848] [2020-10-29 03:38:34,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking...